Djudjur Luciana Radjagukguk, and Hajid Arrafi. “Marketing Communication Strategy of PT. Cyber Edu Inkor in Promoting Cyber Learning Programs”. IJESS International Journal of Education and Social Science 3, no. 1 (April 30, 2022): 43-48. Accessed January 21, 2025. http://ejournal.aissrd.org/index.php/ijess/article/view/75.