Souliya, T., S. Phanfongpet, K. Lamphaiphan, K. Sidavong, and P. Vatthanavong. “Demotivating Factors on English Speaking of English Program Students, Faculty of Education, Souphanouvong University”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 7, no. 2, Dec. 2021, pp. 273-84, http://www.su-journal.com/index.php/su/article/view/142.