APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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