APA (7th ed.) Citation

Kaufmann, W. J. (1987). Discovering the universe. Freeman.

Chicago Style (17th ed.) Citation

Kaufmann, William J. Discovering the Universe. New York, NY: Freeman, 1987.

MLA (9th ed.) Citation

Kaufmann, William J. Discovering the Universe. Freeman, 1987.

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