Cita APA (7a ed.)
Enger, E. D., Gibson, A. H., & Kormelink, J. (1982). Concepts in biology (3rd ed.). WM.C brown.
Cita Chicago Style (17a ed.)
Enger, Eldon D., Andrew H. Gibson, y J.Richard Kormelink. Concepts in Biology. 3rd ed. Iowa: WM.C brown, 1982.
Cita MLA (9a ed.)
Enger, Eldon D., et al. Concepts in Biology. 3rd ed. WM.C brown, 1982.
Precaución: Estas citas no son 100% exactas.