APA Style
Gunawijaya, F, A., Harahap, Z. (2013).
Buku Saku Harrison Gastroenterologi .
Tangerang Selatan:
Karisma Publishing Group.
MLA Style
Gunawijaya, Fajar, Arifin., Harahap, Zulfan.
"Buku Saku Harrison Gastroenterologi".
Tangerang Selatan:
Karisma Publishing Group,
2013.
KMB.