APA (7th ed.) Citation

Durant, W., & Durant, A. (1977). A dual autobiography. Simon and Schuster.

Chicago Style (17th ed.) Citation

Durant, Will, and Ariel Durant. A Dual Autobiography. New York: Simon and Schuster, 1977.

MLA (9th ed.) Citation

Durant, Will, and Ariel Durant. A Dual Autobiography. Simon and Schuster, 1977.