Cita APA

Harrison, T. R. (1980). Principles of internal medicine (9 ed.). McGraw - Hill Book Company.

Citación estilo Chicago

Harrison, T. R. Principles of Internal Medicine. 9 ed. New York: McGraw - Hill Book Company, 1980.

Cita MLA

Harrison, T. R. Principles of Internal Medicine. 9 ed. McGraw - Hill Book Company, 1980.