APA

Friedmann W., . (1965). Introduction to world politics. : Macmillan Company, London.

Chicago

Friedmann W, . 1965. Introduction to world politics. : Macmillan Company, London.

Harvard

Friedmann W., . (1965). Introduction to world politics. : Macmillan Company, London.

MLA

Friedmann W, . Introduction to world politics. : Macmillan Company, London. 1965.