โสภโณทัยส. “The Study of Visionary Leadership With Change Management of School Administrators under the Secondary Education Service Area Office 36 (Chiang Rai - Phayao)”. Journal of Humanities and Social Sciences University of Phayao, Vol. 2, no. 3, July 2019, pp. 9 - 17, https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/200513.