กังสนันท์ โ. A TRANSITION FROM PRIMARY TO SECONDARY GRADES. Journal of MCU Nakhondhat, Nakhon Si Thammarat, Thailand, v. 8, n. 9, p. 34–46, 2021. Disponível em: https://so03.tci-thaijo.org/index.php/JMND/article/view/254987. Acesso em: 11 oct. 2026.