Lertwaritnan , P. . and Kulapichitr , U. . (2020) “Proposed Guidelines for Internal Quality Assurance of Child Care Centers”, Journal of Education Studies. Bangkok, Thailand, 48(2), pp. 165–183. Available at: https://so02.tci-thaijo.org/index.php/EDUCU/article/view/243203 (Accessed: 30 April 2024).