APA-referens (7:e uppl.)

Cain, M. L., Bowman, W. D., & Hacker, S. D. (2014). Ecology (Third edition.). Sinauer Associates, Inc. Publishers.

Chicago-referens (17:e uppl.)

Cain, Michael L., William D. Bowman, och Sally D. Hacker. Ecology. Third edition. Sunderland, Massachusetts, U.S.A: Sinauer Associates, Inc. Publishers, 2014.

MLA-referens (9:e uppl.)

Cain, Michael L., et al. Ecology. Third edition. Sinauer Associates, Inc. Publishers, 2014.