APA (7th ed.) Citation

Freedman, W. J., & Kaufmann, W. J. (2008). Universe (Eigth edition.). W.H. Freeman and Company.

Chicago Style (17th ed.) Citation

Freedman, William J., and William J. Kaufmann. Universe. Eigth edition. New York, NY: W.H. Freeman and Company, 2008.

MLA (9th ed.) Citation

Freedman, William J., and William J. Kaufmann. Universe. Eigth edition. W.H. Freeman and Company, 2008.

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