Niyada - Korakovida. (2017) Strategies for Developing Early Childhood Educational Quality Through the Collaboration of Private Schools,Chiang Mai Province. <i>Silpakorn University Journal of Social Sciences, Humanities, and Arts</i>, <i>17</i>(3), 307-324.Niyada - Korakovida. "Strategies for Developing Early Childhood Educational Quality Through the Collaboration of Private Schools,Chiang Mai Province". Silpakorn University Journal of Social Sciences, Humanities, and Arts 17 (2017):307-324.Niyada - Korakovida. Strategies for Developing Early Childhood Educational Quality Through the Collaboration of Private Schools,Chiang Mai Province. Silpakorn University Research and Development Institute:ม.ป.ท. 2017.