Dyfyniad APA

Cain, M. L., Bowman, W. D., & Hacker, S. D. (2011). Ecology (2nd ed.). Sinauer Associates.

Dyfyniad Arddull Chicago

Cain, Michael L., William D. Bowman, and Sally D. Hacker. Ecology. 2nd ed. Sunderland, Mass.: Sinauer Associates, 2011.

Dyfyniad MLA

Cain, Michael L., et al. Ecology. 2nd ed. Sinauer Associates, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.