APA (7th ed.) Citation

Warntz, W. (1964). Geographers and what they do. F.Watts.

Chicago Style (17th ed.) Citation

Warntz, William. Geographers and What They Do. N.Y.: F.Watts, 1964.

MLA (8th ed.) Citation

Warntz, William. Geographers and What They Do. F.Watts, 1964.