กนกศิลปะธรรม บ. Developments and New Look of TOEFL : Observations for Language Teachers. Journal of the Faculty of Arts, Silpakorn University, [S. l.], v. 28, n. ฉบับพิเศษ, p. 124–139, 2020. Disponível em: https://so04.tci-thaijo.org/index.php/jasu/article/view/239996. Acesso em: 11 oct. 2026.