APA (7th ed.) Citation

Harrison, T. R., & Thorn, G. W. (1977). Harrison's principles of internal medicine. McGraw-Hill.

Chicago Style (17th ed.) Citation

Harrison, Tinsley Randolph, and George W. Thorn. Harrison's Principles of Internal Medicine. New York: McGraw-Hill, 1977.

MLA (9th ed.) Citation

Harrison, Tinsley Randolph, and George W. Thorn. Harrison's Principles of Internal Medicine. McGraw-Hill, 1977.