Napitupulu, Lisfarika. “People’s Perception Towards Immigrants Based on Acceptance in Pekanbaru (Riau Province)”. Global Journal of Psychology Research: New Trends and Issues 8, no. 2 (June 18, 2018): 88–96. Accessed May 5, 2024. https://un-pub.eu/ojs/index.php/gjpr/article/view/3491.