Gaya APA

L.[et.al], K. (2015). Harrison's priciples of internal medicine 19th edition 1st volume (19). New York: McGraw-Hill.

Gaya MLA

L.[et.al], Kasper,Dennis. "Harrison's priciples of internal medicine 19th edition 1st volume". 19 New York: McGraw-Hill, 2015. Text.