APA (7 वां संस्करण) प्रशस्ति पत्र

Allen, J. L. (2008). Annual editions: Environment 07/08 (Twenty-sixth edition.). McGraw-Hill/Dushkin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Allen, John L. Annual Editions: Environment 07/08. Twenty-sixth edition. Dubuque, IA: McGraw-Hill/Dushkin, 2008.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Allen, John L. Annual Editions: Environment 07/08. Twenty-sixth edition. McGraw-Hill/Dushkin, 2008.

चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.