APA (7th ed.) Citation

Maritain, J., & Watkin, E. (1962). An introduction to philosophy. Sheed and Ward.

Chicago Style (17th ed.) Citation

Maritain, Jacques, and E.I Watkin. An Introduction to Philosophy. New York: Sheed and Ward, 1962.

MLA (9th ed.) Citation

Maritain, Jacques, and E.I Watkin. An Introduction to Philosophy. Sheed and Ward, 1962.