Mulyaningsih. “Concept, Study, and Model of ‘Ngopi Silih Simbeuh’ As a Form of Bureaucrats’ Communications in Digital Era”. International Journal of Advanced Science and Technology 29, no. 08 (June 2, 2020): 1296 - 1308. Accessed September 28, 2021. https://sersc.org/journals/index.php/IJAST/article/view/20148.