APA

Forsyth M. G., Keens-Soper H. M. A. & Savigear P. (1970). The theory of international relations: selected texts from Gentili to Treitschke. New York: Atherton.

Chicago

Forsyth Murray Greensmith, Keens-Soper H M A and Savigear Peter. 1970. The theory of international relations: selected texts from Gentili to Treitschke. New York: Atherton.

Harvard

Forsyth M. G., Keens-Soper H. M. A. and Savigear P. (1970). The theory of international relations: selected texts from Gentili to Treitschke. New York: Atherton.

MLA

Forsyth Murray Greensmith, Keens-Soper H M A and Savigear Peter. The theory of international relations: selected texts from Gentili to Treitschke. New York: Atherton. 1970.