Primary lymphoma of the gastrointestinal tract
by Agus Sudiro Waspodo ... [and others]
The Indonesian Journal of Gastroenterology Hepatology and Digestive Endoscopy, 2001
 Artikel Jurnal
Smout, A.J.P.M.
Normal and disturbed motility of the gastrointestinal tract
Wrightson Biomedical Publishing, 1994
 Buku Teks SO
Resistance patterns of microbes isolated from gastrointestinal tract
[Fakultas Kedokteran Universitas Indonesia, Fakultas Kedokteran Universitas Indonesia], 2011
 Artikel Jurnal
Pickhardt, Perry J.
Atlas of gastrointestinal imaging: radiologic-endoscopic correlation
Saunders elsevier, 2007
 Buku Referensi
Colorectal polyp : management and its role in Gastrointestinal tract malignancy
 Artikel Jurnal