Panyakmo (Dokmai), PhraPrapas. 2020. “PERSONNEL MANAGEMENT BASED ON THE SAPPURISADHAMMA 7 FOR MEDIUM SCHOOL ADMINISTRATORS UNDER THE OFFICE OF NAKHON RATCHASIMA PRIMARY EDUCATIONAL SERVICE AREA 6”. Journal of Graduate MCU KhonKaen Campus 7 (4):250-65. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/240194.