Approval.

frontend/id/sources.json

@@ -68,6 +68,7 @@
         "covers_timespan": "Waktu yang didiskusikan",
         "editor": "Editor",
         "booktitle": "Book title",
-        "isbn": "ISBN"
+        "isbn": "ISBN",
+        "source_is_referenced_by_objects": "Objects Created in Reference to the Source"
     }
 }