APA (7th ed.) Citation

Portnoy, K. (1998). Screen adaptation: A scriptwriting handbook. Focal Press.

Chicago Style (17th ed.) Citation

Portnoy, Kenneth. Screen Adaptation: A Scriptwriting Handbook. Boston: Focal Press, 1998.

MLA (9th ed.) Citation

Portnoy, Kenneth. Screen Adaptation: A Scriptwriting Handbook. Focal Press, 1998.