APA način citiranja

McGowen, B., & Richardson, V. (2000). Clockwise: Pre - intermediate : Classbook. New York: Oxford University Press.

Čikaški stil citiranja

McGowen, Bruce., i Vic Richardson. Clockwise: Pre - Intermediate : Classbook. New York: Oxford University Press, 2000.

MLA način citiranja

McGowen, Bruce., i Vic Richardson. Clockwise: Pre - Intermediate : Classbook. New York: Oxford University Press, 2000.