APA (7th ed.) Citation

Friedmann, W. G. (1956). An introduction to world politics (3rd. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Friedmann, Wolfgang Gaston. An Introduction to World Politics. 3rd. ed. London: Macmillan, 1956.

MLA (9th ed.) Citation

Friedmann, Wolfgang Gaston. An Introduction to World Politics. 3rd. ed. Macmillan, 1956.