Gaya APA

Longo, D, L., Fauci, A, S. (2013). Harrison's : Gastroenterology and hepatology / second edition (2). New York: McGraw-Hill.

Gaya MLA

Longo, Dan, L.., Fauci, Anthony, S.. "Harrison's : Gastroenterology and hepatology / second edition". 2 New York: McGraw-Hill, 2013. Text.