APA (7th ed.) Citation

Tiffin, J., Knight, F. B., & Asher, E. J. (1946). The psychology of normal people. Heath.

Chicago Style (17th ed.) Citation

Tiffin, Joseph, Frederick B. Knight, and Easton Jackson Asher. The Psychology of Normal People. Boston: Heath, 1946.

MLA (9th ed.) Citation

Tiffin, Joseph, et al. The Psychology of Normal People. Heath, 1946.