Παραπομπή APA

Needler, M. C. (1966). Understanding foreign policy. Holt, rinehart and winston.

Παραπομπή Chicago Style

Needler, Martin C. Understanding Foreign Policy. New York: Holt, rinehart and winston, 1966.

Παραπομπή MLA

Needler, Martin C. Understanding Foreign Policy. Holt, rinehart and winston, 1966.