Thaima, W., A. Pakornpimook, P. Nuntharatkul, and B. Ruangsil. “Collaborative Management in the Internal Quality Assurance of Schools under the Ratchaburi Secondary Education Service Area Office”. Vocational Education Central Region Journal, vol. 6, no. 1, June 2022, pp. 71-78, https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/256643.