Gunawan, Williams, Benyamin Limanto, and Abraham William P. “TUMASING (TUku Mangan GAk PuSING)”. Journal of Information System,Graphics, Hospitality and Technology 1, no. 01 (May 10, 2019): 6–8. Accessed November 23, 2024. https://jurnal.stts.edu/index.php/insight/article/view/5.