APA (7th ed.) Citation

Jacobs, M., & Kokrda, K. (1990). Photography in focus (4th ed.). National Textbook.

Chicago Style (17th ed.) Citation

Jacobs, Mark, and Ken Kokrda. Photography in Focus. 4th ed. Lincolnwood, Ill: National Textbook, 1990.

MLA (9th ed.) Citation

Jacobs, Mark, and Ken Kokrda. Photography in Focus. 4th ed. National Textbook, 1990.