diff --git a/examples/semantic-document/content/document.json b/examples/semantic-document/content/document.json
index ca85213..a416159 100644
--- a/examples/semantic-document/content/document.json
+++ b/examples/semantic-document/content/document.json
@@ -42,7 +42,8 @@
             {
               "type": "citation",
               "refs": ["turing1936"],
-              "locator": "pp. 230-265"
+              "locator": "230-265",
+              "locatorType": "page"
             }
           ]
         },
diff --git a/schemas/semantic.schema.json b/schemas/semantic.schema.json
index 25e142e..90d5d0d 100644
--- a/schemas/semantic.schema.json
+++ b/schemas/semantic.schema.json
@@ -20,6 +20,15 @@
           "type": "string",
           "description": "Page, chapter, section, or other locator (CSL-compatible, more general than pages)"
         },
+        "locatorType": {
+          "type": "string",
+          "description": "Type of locator (CSL-compatible). Defaults to \"page\" if omitted.",
+          "enum": [
+            "page", "chapter", "section", "paragraph", "line",
+            "verse", "volume", "issue", "part", "book",
+            "figure", "table", "note", "opus", "sub-verbo"
+          ]
+        },
         "pages": {
           "type": "string",
           "description": "Page range (deprecated: prefer locator for flexibility)"