APA (7th ed.) Citation

Warntz, W., & Wolff, P. (1971). Breakthroughs in geography. New American Library.

Chicago Style (17th ed.) Citation

Warntz, William, and Peter Wolff. Breakthroughs in Geography. New York ; London: New American Library, 1971.

MLA (9th ed.) Citation

Warntz, William, and Peter Wolff. Breakthroughs in Geography. New American Library, 1971.

Warning: These citations may not always be 100% accurate.