diff --git a/NAMESPACE b/NAMESPACE
index f7f26e0..c3fe728 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -8,8 +8,8 @@ S3method(is.subject,subject)
 S3method(print,dataset)
 S3method(summary,dataset)
 export("creator<-")
-export("dataset_source<-")
 export("dataset_title<-")
+export("datasource<-")
 export("description<-")
 export("geolocation<-")
 export("identifier<-")
@@ -27,10 +27,10 @@ export(dataset_download)
 export(dataset_export)
 export(dataset_export_csv)
 export(dataset_local_id)
-export(dataset_source)
 export(dataset_title)
 export(dataset_title_create)
 export(dataset_uri)
+export(datasource)
 export(description)
 export(dublincore)
 export(geolocation)
diff --git a/R/dataset_bibentry.R b/R/dataset_bibentry.R
index 218096c..c1be671 100644
--- a/R/dataset_bibentry.R
+++ b/R/dataset_bibentry.R
@@ -5,6 +5,8 @@
 #' For further information on
 #' the \code{bibentry} class see \code{utils::\link[utils]{bibentry}}.
 #' @param ds A dataset object created by \code{\link{dataset}}.
+#' @param style Defaults to \code{"text"}, alternatives: \code{"Bibtex"},
+#' \code{"citation"}, \code{"html"}, \code{"R"}.
 #' @return The \code{\link[utils]{bibentry}} object of the dataset.
 #' @importFrom utils bibentry
 #' @examples
@@ -23,12 +25,19 @@
 #'          resourceType = "Dataset"
 #'          )
 #'
-#' print(ds, style="text")
-#' print(ds, style="Bibtex")
+#' dataset_bibentry(ds, style="text")
+#' dataset_bibentry(ds, style="Bibtex")
 #' @export
 
-dataset_bibentry <- function(ds) {
+dataset_bibentry <- function(ds, style = "text") {
 
-  attr(ds, "DataBibentry")
+  DataBibentry <- attr(ds, "DataBibentry")
 
+  if( ! style %in% c("Bibtex", "citation", "html", "latex", "R", "text") ) {
+    message('dataset_bibentry(ds, style="..." must be any of "text", "Bibtex", "citation",\n"html", "latex", "R".  Using "text".')
+    DataBibentry
+  } else {
+    print(DataBibentry, style = style)
+    invisible(DataBibentry)
+  }
 }
diff --git a/R/publisher.R b/R/publisher.R
index 2b44aa3..4d5802a 100644
--- a/R/publisher.R
+++ b/R/publisher.R
@@ -22,15 +22,27 @@
 #' @family Reference metadata functions
 #' @export
 publisher<- function(x) {
-  attr(x, "Publisher")
+
+  assertthat::assert_that(is.dataset(x),
+                          msg = "publisher(x) must be a dataset object created with dataset() or as_dataset().")
+
+
+  DataBibentry <- dataset_bibentry(x)
+  DataBibentry$publisher
 }
 
 #' @rdname publisher
 #' @export
 `publisher<-` <- function(x,  overwrite = TRUE, value) {
 
+  assertthat::assert_that(is.dataset(x),
+                          msg = "publisher(x) must be a dataset object created with dataset() or as_dataset().")
+
+  DataBibentry <- invisible(dataset_bibentry(x))
+
   if ( is.null(value)) {
-    attr(x, "Publisher") <- NA_character_
+    DataBibentry$publisher <- ":tba"
+    attr(x, "DataBibentry") <- DataBibentry
     return(x)
   }
 
@@ -38,13 +50,18 @@ publisher<- function(x) {
     stop("publisher(x) <- value: value must be of length 1.")
     }
 
-  if (is.null(attr(x, "Publisher"))) {
-     attr(x, "Publisher") <- value
-    } else if ( overwrite ) {
-    attr(x, "Publisher") <- value
+  is_tba <- DataBibentry$publisher ==  ":tba"
+
+  if (is.null(DataBibentry$publisher)) {
+    DataBibentry$publisher <- value
+    } else if (is_tba) {
+      DataBibentry$publisher <- value
+      }else if ( overwrite ) {
+      DataBibentry$publisher <- value
   } else {
-    message ("The dataset has already an Publisher: ",  publisher(x) )
+    message ("The dataset has already an Publisher: ",    DataBibentry$publisher )
   }
 
+  attr(x, "DataBibentry") <- DataBibentry
   x
 }
diff --git a/tests/testthat/test-dataset_bibentry.R b/tests/testthat/test-dataset_bibentry.R
index 0a7643f..78e6bca 100644
--- a/tests/testthat/test-dataset_bibentry.R
+++ b/tests/testthat/test-dataset_bibentry.R
@@ -13,6 +13,20 @@ ds <- dataset(iris,
          resourceType = "Dataset"
          )
 
-test_that("multiplication works", {
+tempcon <- tempfile()
+
+test_that("dataset_bibentry() works", {
   expect_equal(class(dataset_bibentry(ds)), "bibentry")
+  expect_message(dataset_bibentry(ds, style = "cool"))
+})
+
+writeLines(text = paste(format(dataset_bibentry(ds), "Bibtex"), collapse = "\n\n"),
+           tempcon )
+
+read_bibtex <- readLines(tempcon)
+
+test_that("dataset_bibentry() works", {
+  expect_equal(read_bibtex[1], "@Misc{,")
+  expect_equal(read_bibtex[2], "  title = {The iris Dataset},")
 })
+
diff --git a/tests/testthat/test-publisher.R b/tests/testthat/test-publisher.R
index 07be99b..d039ada 100644
--- a/tests/testthat/test-publisher.R
+++ b/tests/testthat/test-publisher.R
@@ -1,17 +1,33 @@
-iris_dataset <- iris
-publisher(iris_dataset) <- "American Iris Society"
+iris_dataset <- dataset(
+  x = iris,
+  title = "Iris Dataset",
+  author = person("Edgar", "Anderson", role = "aut"),
+  source = "https://doi.org/10.1111/j.1469-1809.1936.tb02137.x",
+  date = 1935,
+  language = "en",
+  description = "This famous (Fisher's or Anderson's) iris data set."
+)
 
+a <-
+is.null(a)
 
 test_that("publisher() works", {
-  expect_equal(publisher(iris_dataset), "American Iris Society")
-  expect_message(publisher(iris_dataset, overwrite=FALSE) <- "Overwritten")
+  expect_true(is.null(publisher(iris_dataset)))
+})
+
+iris_dataset2 <- iris_dataset
+publisher(iris_dataset2) <- "American Iris Society"
+
+test_that("publisher() <- assignment works", {
+  expect_equal(publisher(iris_dataset2), "American Iris Society")
+  expect_message(publisher(iris_dataset2, overwrite=FALSE) <- "Overwritten")
 })
 
 
 publisher(iris_dataset) <- NULL
 
 test_that("publisher() works", {
-  expect_equal(publisher(iris_dataset), NA_character_)
+  expect_equal(publisher(iris_dataset), ":tba")
 })
 
 test_that("publisher(x) <- c(1:2) throws and error", {