APA (7 वां संस्करण) प्रशस्ति पत्र

SERKER CATH. AGAINST THE ODDS: STEPHEN HAWKINGS (2016.). HEINEMANN TREE PUBLISHING HOUSE.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

SERKER CATH. AGAINST THE ODDS: STEPHEN HAWKINGS. 2016. VICTORIA: HEINEMANN TREE PUBLISHING HOUSE.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

SERKER CATH. AGAINST THE ODDS: STEPHEN HAWKINGS. 2016. HEINEMANN TREE PUBLISHING HOUSE.