APA (7th ed.) Citation

Cockrum, E. L., McCauley William J., & Younggren, N. A. (1966). Biology (Repr.). Saunders.

Chicago Style (17th ed.) Citation

Cockrum, E. Lendell, McCauley William J., and Newell A. Younggren. Biology. Repr. Philadelphia: Saunders, 1966.

MLA (9th ed.) Citation

Cockrum, E. Lendell, et al. Biology. Repr. Saunders, 1966.