Yongchai Toomjeen และ Sathirakorn Pongpanich. (2001) Developing quality of health services : a case study in Meunghong Health Center, Chaturaphakphiman District, Roi et Province. Chulalongkorn University:ม.ป.ท.Yongchai Toomjeen และ Sathirakorn Pongpanich. 2001. Developing quality of health services : a case study in Meunghong Health Center, Chaturaphakphiman District, Roi et Province. ม.ป.ท.:Chulalongkorn University;Yongchai Toomjeen และ Sathirakorn Pongpanich. Developing quality of health services : a case study in Meunghong Health Center, Chaturaphakphiman District, Roi et Province. ม.ป.ท.:Chulalongkorn University, 2001. Print.