APA (7th ed.) Citation

Buber, M., & Friedman, M. (1967). A believing humanism: My testament, 1902-1965. Simon and Schuster.

Chicago Style (17th ed.) Citation

Buber, Martin, and Maurice Friedman. A Believing Humanism: My Testament, 1902-1965. New York: Simon and Schuster, 1967.

MLA (9th ed.) Citation

Buber, Martin, and Maurice Friedman. A Believing Humanism: My Testament, 1902-1965. Simon and Schuster, 1967.