Cita APA (7th ed.)
(1991). Harrison's principles of internal medicine: Volume 2 (12th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Harrison's Principles of Internal Medicine: Volume 2. 12th ed. New York: McGraw-Hill, 1991.
Cita MLA (9th ed.)
Harrison's Principles of Internal Medicine: Volume 2. 12th ed. McGraw-Hill, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.