APA citiranje

Gerking, S. D. (1969). Biological systems. W. B. Saunders.

Chicago Style (17th ed.) Citation

Gerking, Shelby Delos. Biological Systems. Philadelphia: W. B. Saunders, 1969.

MLA citiranje

Gerking, Shelby Delos. Biological Systems. W. B. Saunders, 1969.