APA (7th ed.) Citation

Hartmann, W. K., & Impey, C. (1994). Astronomy: The cosmic journey (5th edition.). Wadsworth Publishing Company.

Chicago Style (17th ed.) Citation

Hartmann, William K., and Chris Impey. Astronomy: The Cosmic Journey. 5th edition. Belmont, California: Wadsworth Publishing Company, 1994.

MLA (8th ed.) Citation

Hartmann, William K., and Chris Impey. Astronomy: The Cosmic Journey. 5th edition. Wadsworth Publishing Company, 1994.