APA (7 वां संस्करण) प्रशस्ति पत्र

PARRAGON BOOKS. (2019). THEN & NOW (2015 Ed.). PARRAGON BOOK PUBLISHERS.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

PARRAGON BOOKS. THEN & NOW. 2015 Ed. LONDON: PARRAGON BOOK PUBLISHERS, 2019.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

PARRAGON BOOKS. THEN & NOW. 2015 Ed. PARRAGON BOOK PUBLISHERS, 2019.