Saputra, R. M. I., and Y. Yusnedi. “LEGAL ASPECTS IN PROMOTING THE DYNAMICS OF UPSTREAM INDRAGIRI HULU ECONOMIC DEVELOPMENT”. Jurnal Manajemen Dan Bisnis, vol. 10, no. 2, Dec. 2021, pp. 119-27, https://journal.itbind.ac.id/index.php/jmbi/article/view/415.