Tapaneeyasub, P., and T. Busarakoon. “UIDELINES OR HE EVELOPMENT F CADEMIC DMINISTRATION F DUCATIONAL PPORTUNITY XPANSION CHOOLS NDER HE AMUTSAKHON RIMARY DUCATION ERVICE REA FFICE”. alaya longkorn eview, ol. 11, no. 2, Aug. 2021, pp. 77-90, https://so06.tci-thaijo.org/index.php/var/article/view/244848.