Amporn Boonnak และ Prida Tasanapradit. (2003) The evaluation on health supervisors training program in Chun District, Phayao Province. Chulalongkorn University:ม.ป.ท.Amporn Boonnak และ Prida Tasanapradit. 2003. The evaluation on health supervisors training program in Chun District, Phayao Province. ม.ป.ท.:Chulalongkorn University;Amporn Boonnak และ Prida Tasanapradit. The evaluation on health supervisors training program in Chun District, Phayao Province. ม.ป.ท.:Chulalongkorn University, 2003. Print.