Indurasmi, A. D., Dela Novitasari, and Sakinah Qurrotu A’yun. “The Effect of English Usage on Student Purchase Interest”. Journal of Linguistics and Applied Linguistics, vol. 2, no. 1, June 2022, pp. 1-7, https://www.digitalpress.gaes-edu.com/index.php/jolal/article/view/304.