APA (7th ed.) Citation

Mallas, J. H., & Kreimer, E. (1979). The Messier album: An observer's handbook. Cambridge University Press.

Chicago Style (17th ed.) Citation

Mallas, John H., and Evered Kreimer. The Messier Album: An Observer's Handbook. Cambridge [England] ; New York: Cambridge University Press, 1979.

MLA (9th ed.) Citation

Mallas, John H., and Evered Kreimer. The Messier Album: An Observer's Handbook. Cambridge University Press, 1979.