APA (7 वां संस्करण) प्रशस्ति पत्र

Shepard, P., & McKinley, D. (1971). Environmental essays on the planet as home. Houghton-Mifflin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Shepard, Paul, और Daniel McKinley. Environmental Essays on the Planet as Home. Boston: Houghton-Mifflin, 1971.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Shepard, Paul, और Daniel McKinley. Environmental Essays on the Planet as Home. Houghton-Mifflin, 1971.