พลอยเพ็ชร อ. Efficiency and Effectiveness of Quality Assurance, Nakhon Phanom University in Academic year 2015. Journal of Humanities and Social Sciences, Rajapruk University, [S. l.], v. 3, n. 1, p. 71–82, 2018. Disponível em: https://so03.tci-thaijo.org/index.php/rpu/article/view/112548. Acesso em: 9 may. 2024.