Chatrudee Sukhachati Kopitz และ Monnipha Somphong. (2008) Factors affecting breastfeeding in the first 6 months :. Language Institute, Thammasat University,:ม.ป.ท.Chatrudee Sukhachati Kopitz และ Monnipha Somphong. 2008. Factors affecting breastfeeding in the first 6 months :. ม.ป.ท.:Language Institute, Thammasat University,;Chatrudee Sukhachati Kopitz และ Monnipha Somphong. Factors affecting breastfeeding in the first 6 months :. ม.ป.ท.:Language Institute, Thammasat University, 2008. Print.