Citazione Stile APA (7a Edizione)

Dougherty, J. E., & Pfaltzgraff, R. L. (1971). Contending theories of international relations. Lippincott.

Citazione stile Chigago Style (17a edizione)

Dougherty, James E., e Robert L. Pfaltzgraff. Contending Theories of International Relations. Philadelphia: Lippincott, 1971.

Citatione MLA (9a ed.)

Dougherty, James E., e Robert L. Pfaltzgraff. Contending Theories of International Relations. Lippincott, 1971.