Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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