APA (7th ed.) Citation

Waldmann, C., & Wexler, A. (1992). Who was who in world exploration. Facts On File.

Chicago Style (17th ed.) Citation

Waldmann, Carl, and Alan Wexler. Who Was Who in World Exploration. New York u.a: Facts On File, 1992.

MLA (9th ed.) Citation

Waldmann, Carl, and Alan Wexler. Who Was Who in World Exploration. Facts On File, 1992.