Novi Erlita. “The Implementation of National Convention Event of PR Indonesia 2018 in Facing the Challenge of PR 4.0”. IJRDO - Journal of Social Science and Humanities Research 4, no. 6 (June 25, 2019): 70-82. Accessed April 29, 2024. https://ijrdo.org/index.php/sshr/article/view/2933.