บัวสนธ์ ร. (Mixed Method). Ubon Ratchathani Journal of Research and Evaluation, [S. l.], v. 3, n. 1, p. 1–7, 2021. Disponível em: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250865. Acesso em: 1 oct. 2026.