APA (7th ed.) Citation

Levy, D. H. (2003). David Levy's guide to observing and discovering comets. Cambridge University Press.

Chicago Style (17th ed.) Citation

Levy, David H. David Levy's Guide to Observing and Discovering Comets. Cambridge: Cambridge University Press, 2003.

MLA (9th ed.) Citation

Levy, David H. David Levy's Guide to Observing and Discovering Comets. Cambridge University Press, 2003.