แก้วเพ็ชร จ. Data Collection Methods Employed in the International Journal: “System”. RMUTK Journal of Liberal Arts, ฺBangkok, Thailand, v. 1, n. 1, p. 1–10, 2020. Disponível em: https://so02.tci-thaijo.org/index.php/larts-journal/article/view/244174. Acesso em: 6 may. 2024.