Wichiranon, S., A. Arunreung, and J. Kaewlai. “The 21st Century Skills of English for International Communication Graduates Desired by Employers”. RMUTP Research Journal Humanities and Social Sciences, vol. 4, no. 2, July 2020, pp. 15-28, https://so05.tci-thaijo.org/index.php/rmutphuso/article/view/165259.