APA (7th ed.) Citation

Graves, C. (1996). The Zone system for 35mm photographers: A basic guide to exposure control (2nd ed.). Focal Press.

Chicago Style (17th ed.) Citation

Graves, Carson. The Zone System for 35mm Photographers: A Basic Guide to Exposure Control. 2nd ed. Oxford: Focal Press, 1996.

MLA (9th ed.) Citation

Graves, Carson. The Zone System for 35mm Photographers: A Basic Guide to Exposure Control. 2nd ed. Focal Press, 1996.