Putri, Ika Karunia, and Ria Karunia Delfiwani. “The Relationship Between Shyness and Ability to Speak English of Undergraduate Students”. Journal of English Practitioner and Educator Community, vol. 1, no. 1, July 2025, pp. 33-40, https://www.ejournal.kampusmelayu.ac.id/index.php/J-EPEC/article/view/535.