Girson, Ralph
2005
Artikel Jurnal
by Indra Marki ... [and others]
The Indonesian Journal of Gastroenterology Hepatology and Digestive Endoscopy, 2001
Artikel Jurnal
Samosir, David R. S.
The Indonesia Journal of Gastroenterology Hepatology and Digestive Endoscopy, 2002
Artikel Jurnal
Wolfe,Tom
Farrar straus giroux, 1998
Buku Teks
Hwang, Soon-Won
Jimoondang Publishing Company, 2003
Buku Teks