Suvia, H., M. . Azril Akbar, V. . Kristini, and M. Marcelino. “Analysis of Foreign Exchange GRDP in the Tourism Sector on Income in Batam City”. Eduvest - Journal of Universal Studies, vol. 1, no. 6, June 2021, pp. 416-22, doi:10.59188/eduvest.v1i6.80.