APA (7th ed.) Citation

Spangenburg, R., & Moser, D. (2003). A look at comets. F. Watts.

Chicago Style (17th ed.) Citation

Spangenburg, Ray, and Diane Moser. A Look at Comets. New York: F. Watts, 2003.

MLA (8th ed.) Citation

Spangenburg, Ray, and Diane Moser. A Look at Comets. F. Watts, 2003.

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