Gaya APA

(dkk), D, L, L. (2011). Harrison's Principles of Internal Medicine 18 Ed. Volume 2 (edisi 18). Amerika: McGraw-Hill.

Gaya MLA

(dkk), Dan, L., Longo. "Harrison's Principles of Internal Medicine 18 Ed. Volume 2". edisi 18 Amerika: McGraw-Hill, 2011. Text.