Punjapon Prasurthsin และ Tanittha Chatsuwan. (2005) Amoxicillin resistance in Helicobacter pylori isolated from Thai patients. Chulalongkorn University:ม.ป.ท.Punjapon Prasurthsin และ Tanittha Chatsuwan. 2005. Amoxicillin resistance in Helicobacter pylori isolated from Thai patients. ม.ป.ท.:Chulalongkorn University;Punjapon Prasurthsin และ Tanittha Chatsuwan. Amoxicillin resistance in Helicobacter pylori isolated from Thai patients. ม.ป.ท.:Chulalongkorn University, 2005. Print.