Dyfyniad APA

Wilson, j. D., Braunwald, E., & Isselbacher, K. j. P. (1991). Harrison's principles of internal medicine (12th ed.). McGraw-Hill Book Co..

Dyfyniad Arddull Chicago

Wilson, jean D., Eugene Braunwald, and Kurt j Petersdorf Isselbacher. Harrison's Principles of Internal Medicine. 12th ed. New York: McGraw-Hill Book Co., 1991.

Dyfyniad MLA

Wilson, jean D., et al. Harrison's Principles of Internal Medicine. 12th ed. McGraw-Hill Book Co., 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.