OMITA, Fitri; MARNA, Jean Elikal. The Impact of Foreign Direct Investment (FDI) and Domestic Direct Investment (DDI) on Gross Regional Domestic Product (GRDP) in Sumatra Island. Jurnal Inovasi Pendidikan Ekonomi, [S. l.], v. 16, n. 1, p. 70–79, 2026. DOI: 10.24036/jipe.v16.i1.53. Disponível em: https://jipe.ppj.unp.ac.id/index.php/jipe/article/view/53. Acesso em: 22 jul. 2026.