APA (7 वां संस्करण) प्रशस्ति पत्र

Bowman, W. D., Hacker, S. D., & Cain, M. L. (2018). Ecology (Fourth edition, International.). Sinauer Associates, Inc., Publishers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Bowman, William D., Sally D. Hacker, और Michael L. Cain. Ecology. Fourth edition, International. Sunderland, MA: Sinauer Associates, Inc., Publishers, 2018.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Bowman, William D., et al. Ecology. Fourth edition, International. Sinauer Associates, Inc., Publishers, 2018.