APA (7th ed.) Citation

Thomas, C. B., Ross, D. C., & Freed, E. S. (19). Studies on the psychological characteristics of medical students. Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Thomas, Caroline B., Donald Clarence Ross, and Ellen S. Freed. Studies on the Psychological Characteristics of Medical Students. Baltimore: Johns Hopkins Press, 19.

MLA (9th ed.) Citation

Thomas, Caroline B., et al. Studies on the Psychological Characteristics of Medical Students. Johns Hopkins Press, 19.