Sutem เอกราช, Kamolvoradej หยกแก้ว, and Sanghirun มานี. “GUIDELINES FOR THE MANAGING DISTRICT UNITS. A CACE OF NAN SPECIAL EDUCATION CENTER”. Journal of MCU Nakhondhat 7, no. 9 (September 21, 2020): 138–152. Accessed May 24, 2022. https://so03.tci-thaijo.org/index.php/JMND/article/view/246732.