Syamol Rompipat และ Pregamol Rutchanagul and Patcharaporn Kaewwimol. (2019) Factors Related to the Perceived Competency Regarding Knowledge and Skills of the Expanded Program on Immunization Staff in Thailand. <i>Thammasat Review</i>, <i>22</i>(1), 77-90.Syamol Rompipat และ Pregamol Rutchanagul and Patcharaporn Kaewwimol. "Factors Related to the Perceived Competency Regarding Knowledge and Skills of the Expanded Program on Immunization Staff in Thailand". Thammasat Review 22 (2019):77-90.Syamol Rompipat และ Pregamol Rutchanagul and Patcharaporn Kaewwimol. Factors Related to the Perceived Competency Regarding Knowledge and Skills of the Expanded Program on Immunization Staff in Thailand. กองบริหารการวิจัย:ม.ป.ท. 2019.