APA (7th ed.) Citation

Ryan, T. A., & Smith, P. C. (1954). Principles of industrial psychology. Ronald Press.

Chicago Style (17th ed.) Citation

Ryan, Thomas Arthur, and Patricia Cain Smith. Principles of Industrial Psychology. N.Y.: Ronald Press, 1954.

MLA (8th ed.) Citation

Ryan, Thomas Arthur, and Patricia Cain Smith. Principles of Industrial Psychology. Ronald Press, 1954.