VATHANAVONG, T., A. KURUDA, P. VATHANAVONG, K. SEMHIRUN, and K. ASAI. “Challenges in Developing Curriculum Training for Enhancing the Competencies in the 21st Century Skills-Based Learning in the New Normal Situations”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 7, no. 2, Dec. 2021, pp. 29-42, http://www.su-journal.com/index.php/su/article/view/118.