APA

Harrison's Principles of internal medicine. New York, Estados Unidos : McGraw-Hill, 1994: .

Chicago

Harrison's Principles of internal medicine. New York, Estados Unidos : McGraw-Hill, 1994: .

Harvard

Harrison's Principles of internal medicine. New York, Estados Unidos : McGraw-Hill, 1994: .

MLA

New York, Estados Unidos : McGraw-Hill, 1994: . .