Suwannarat S, Sangkhaosuthirak S, Jaroensuk B. Development of Internal Supervisory Manual for Small Schools Under Chumphon Primary Educational Service Area Office 2. RJPJ [Internet]. 2022 Apr. 5 [cited 2024 Apr. 26];16(45):99-114. Available from: https://so05.tci-thaijo.org/index.php/RJPJ/article/view/255327