APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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