APA (7th ed.) Citation

Cohen, A. M., Brawer, F. B. ., & Lombardi, J. (1971). A constant variable. Jossey-Bass.

Chicago Style (17th ed.) Citation

Cohen, Arthur M., Florence B. Brawer, and John Lombardi. A Constant Variable. San Francisco: Jossey-Bass, 1971.

MLA (9th ed.) Citation

Cohen, Arthur M., et al. A Constant Variable. Jossey-Bass, 1971.