Hartati, Seri, and Diki Arisandi. “THE ROLE OF INSTANT MESSANGING ON THE EFFECTIVENESS OF LECTURER’S PERFORMANCE AT THE UNIVERSITAS ABDURRAB”. PEOPLE: International Journal of Social Sciences 3, no. 3 (December 5, 2017): 319–326. Accessed September 20, 2024. https://mail.grdspublishing.org/index.php/people/article/view/652.