Cita APA (7th ed.)

Isselbacher, K. J. (1980). Principles of internal medicine: Harrison's (9 ed.). McGraw - Hill.

Cita Chicago (17th ed.)

Isselbacher, Kurt J. Principles of Internal Medicine: Harrison's. 9 ed. Estados Unidos: McGraw - Hill, 1980.

Cita MLA (9th ed.)

Isselbacher, Kurt J. Principles of Internal Medicine: Harrison's. 9 ed. McGraw - Hill, 1980.