Harrison's Principles of internal medicine.

MLA

Harrison, Tinsley Randolph, and Eugene Braunwald. Harrison's Principles of Internal Medicine. 7th ed. / editors Eugene Braunwald ... [et al.] New York (N.Y.): McGraw-Hill, 1987.

APA

Harrison, T. Randolph, & Braunwald, E. (1987). Harrison's Principles of internal medicine. 7th ed. / editors Eugene Braunwald ... [et al.] New York (N.Y.): McGraw-Hill.

Chicago

Harrison, Tinsley Randolph, Harrison's Principles of Internal Medicine. Edited by Eugene Braunwald. 7th ed. / editors Eugene Braunwald ... [et al.] New York (N.Y.): McGraw-Hill, 1987.