APA (7th ed.) Citation

(1991). Harrison's Principles of internal medicine: Companion handbook (12. ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Harrison's Principles of Internal Medicine: Companion Handbook. 12. ed. New York u.a: McGraw-Hill, 1991.

MLA (9th ed.) Citation

Harrison's Principles of Internal Medicine: Companion Handbook. 12. ed. McGraw-Hill, 1991.