APA (7th ed.) Citation

Machholz, D. (2002). The observing guide to the Messier marathon: A handbook and atlas. Cambridge University Press.

Chicago Style (17th ed.) Citation

Machholz, Don. The Observing Guide to the Messier Marathon: A Handbook and Atlas. Cambridge, UK ; New York: Cambridge University Press, 2002.

MLA (9th ed.) Citation

Machholz, Don. The Observing Guide to the Messier Marathon: A Handbook and Atlas. Cambridge University Press, 2002.