SUKIYAH, E.; ISNANIAWARDHANI, V.; SUDRADJAT, A.; ERAWAN, F. The geologic potentials of Riau Islands Province and its development design. Jurnal Perspektif Pembiayaan dan Pembangunan Daerah, [S. l.], v. 5, n. 3, p. 181 - 190, 2018. DOI: 10.22437/ppd.v5i3.4554. Disponível em: https://online-journal.unja.ac.id/JES/article/view/4554. Acesso em: 22 jul. 2024.