Dyfyniad APA

Enger, E. D., Ross, F. C., & Bailey, D. B. (2007). Concepts in biology (Twelfth edition.). McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

Enger, Eldon D., Frederick C. Ross, and David B. Bailey. Concepts in Biology. Twelfth edition. New York: McGraw-Hill Higher Education, 2007.

Dyfyniad MLA

Enger, Eldon D., et al. Concepts in Biology. Twelfth edition. McGraw-Hill Higher Education, 2007.

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