APA (7th ed.) Citation

Bachelor, J. M., & Henry, R. L. (1933). Challenging essays in modern thought ... D. Appleton-Century co..

Chicago Style (17th ed.) Citation

Bachelor, Joseph M., and Ralph Ledyard Henry. Challenging Essays in Modern Thought ... New York: D. Appleton-Century co., 1933.

MLA (9th ed.) Citation

Bachelor, Joseph M., and Ralph Ledyard Henry. Challenging Essays in Modern Thought ... D. Appleton-Century co., 1933.