Gaya APA

Dougherty, J, E., Pfaltzgraff, R, L. (2001). Contending Theories of International Relations : A Comprehensive Survey (Ed.5). New York: Longman.

Gaya MLA

Dougherty, James, E.., Pfaltzgraff, Robert, L.. "Contending Theories of International Relations : A Comprehensive Survey". Ed.5 New York: Longman, 2001. Text.