APA (7 वां संस्करण) प्रशस्ति पत्र

Langan, J. (1998). Reading and study skills (6th ed.). McGraw-Hill Higher Education.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Langan, John. Reading and Study Skills. 6th ed. New York, NY : Bostom: McGraw-Hill Higher Education, 1998.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Langan, John. Reading and Study Skills. 6th ed. McGraw-Hill Higher Education, 1998.