Silanoi, Ladda, Teerachai Teerachai Netthanomsak, Angkana Tungkasamit, and Janya Boonmeeprasert. 2017. “A Study of Educational Management Model for Teachers Professional Development”. Asia-Pacific Journal of Science and Technology 16 (3):281-91. https://so01.tci-thaijo.org/index.php/APST/article/view/83218.