Cita APA

Johnson, C. (1986). The practical zone system: A simple guide to photographic control. Focal Press.

Citación estilo Chicago

Johnson, Chris. The Practical Zone System: A Simple Guide to Photographic Control. Boston: Focal Press, 1986.

Cita MLA

Johnson, Chris. The Practical Zone System: A Simple Guide to Photographic Control. Focal Press, 1986.

Warning: These citations may not always be 100% accurate.