Katunchalee Kuntong และ Sathirakorn Pongpanich. (2004) Assessment of health services providers in primary care unit, Nakhon Si Thummarat Province 2002. Chulalongkorn University:ม.ป.ท.Katunchalee Kuntong และ Sathirakorn Pongpanich. 2004. Assessment of health services providers in primary care unit, Nakhon Si Thummarat Province 2002. ม.ป.ท.:Chulalongkorn University;Katunchalee Kuntong และ Sathirakorn Pongpanich. Assessment of health services providers in primary care unit, Nakhon Si Thummarat Province 2002. ม.ป.ท.:Chulalongkorn University, 2004. Print.