Dyfyniad APA

Keeton, W. T., & Bensadoun, P. D. (1969). Elements of biological science (First edition.). National Bookstore.

Dyfyniad Arddull Chicago

Keeton, William T., and Paula DiSanto Bensadoun. Elements of Biological Science. First edition. Manila: National Bookstore, 1969.

Dyfyniad MLA

Keeton, William T., and Paula DiSanto Bensadoun. Elements of Biological Science. First edition. National Bookstore, 1969.

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