APA (7e ed.) Bronvermelding

Enger, E. D., Ross, F. C., & Bailey, D. B. (2009). Concepts in biology (13th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Enger, Eldon D., Frederick C. Ross, en David B. Bailey. Concepts in Biology. 13th ed. Dubuque, IA: McGraw-Hill, 2009.

MLA (9e ed.) Bronvermelding

Enger, Eldon D., et al. Concepts in Biology. 13th ed. McGraw-Hill, 2009.