APA (7th ed.) Citation

Kaufmann, W. J. (1990). Discovering the universe. W. H. Freeman.

Chicago Style (17th ed.) Citation

Kaufmann, William J. Discovering the Universe. W. H. Freeman, 1990.

MLA (8th ed.) Citation

Kaufmann, William J. Discovering the Universe. W. H. Freeman, 1990.

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