APA (7th ed.) Citation

Martinez, P., & Dunlop, S. (1994). The observer's guide to astronomy. Cambridge University Press.

Chicago Style (17th ed.) Citation

Martinez, Patrick, and Storm Dunlop. The Observer's Guide to Astronomy. Cambridge: Cambridge University Press, 1994.

MLA (8th ed.) Citation

Martinez, Patrick, and Storm Dunlop. The Observer's Guide to Astronomy. Cambridge University Press, 1994.