Approval.

frontend/tr/sources.json

@@ -65,6 +65,9 @@
         "license_explica": "Kayna\u011f\u0131n lisans\u0131 veya say\u0131salla\u015ft\u0131r\u0131lm\u0131\u015f versiyonu.",
         "source_fulltext": "Tam metin",
         "mentioned_places": "Bahsedilen yerler",
-        "covers_timespan": "Zaman aral\u0131\u011f\u0131n\u0131 kapsar"
+        "covers_timespan": "Zaman aral\u0131\u011f\u0131n\u0131 kapsar",
+        "editor": "Editor",
+        "booktitle": "Book title",
+        "isbn": "ISBN"
     }
 }