APA (7th ed.) Citation

Kurtz, P. (1966). American philosophy in the twentieth century. The Macmillan.

Chicago Style (17th ed.) Citation

Kurtz, Paul. American Philosophy in the Twentieth Century. New York: The Macmillan, 1966.

MLA (9th ed.) Citation

Kurtz, Paul. American Philosophy in the Twentieth Century. The Macmillan, 1966.