APA

Spykman N. J., . (1942). America's strategy in world politics: the United States and the balance of power. New York: Brace and Co.

Chicago

Spykman Nicholas John, . 1942. America's strategy in world politics: the United States and the balance of power. New York: Brace and Co.

Harvard

Spykman N. J., . (1942). America's strategy in world politics: the United States and the balance of power. New York: Brace and Co.

MLA

Spykman Nicholas John, . America's strategy in world politics: the United States and the balance of power. New York: Brace and Co. 1942.