Cita APA (7th ed.)

Enger, E. D., Gibson, A. H., & Kormelink, J. (1982). Concepts in biology (3rd ed.). WM.C brown.

Cita Chicago (17th ed.)

Enger, Eldon D., Andrew H. Gibson, i J.Richard Kormelink. Concepts in Biology. 3rd ed. Iowa: WM.C brown, 1982.

Cita MLA (9th ed.)

Enger, Eldon D., et al. Concepts in Biology. 3rd ed. WM.C brown, 1982.