APA (7th ed.) Citation

Villee, C. A. (1950). Biology: The human approach. Saunders.

Chicago Style (17th ed.) Citation

Villee, Claude Alvin. Biology: The Human Approach. Philadelphia: Saunders, 1950.

MLA (9th ed.) Citation

Villee, Claude Alvin. Biology: The Human Approach. Saunders, 1950.