APA (7th ed.) Citation

Fraknoi, A., Morrison, D., & Wolff, S. (1997). Voyages through the universe. Saunders College.

Chicago Style (17th ed.) Citation

Fraknoi, Andrew, David Morrison, and Sidney Wolff. Voyages Through the Universe. Fort Worth, Tex: Saunders College, 1997.

MLA (9th ed.) Citation

Fraknoi, Andrew, et al. Voyages Through the Universe. Saunders College, 1997.