Gaya APA

L.Longo, D., L.Kasper, D. (2012). Harrison's Principles of Internal Medicine Volume 2 Buku 1 Ed 18 (16,18). : Mc Graw Hill.

Gaya MLA

L.Longo, Dan., L.Kasper, Dennis. "Harrison's Principles of Internal Medicine Volume 2 Buku 1 Ed 18". 16,18 : Mc Graw Hill, 2012. Text.