SITUMORANG, B. U. K. .; HARAHAP, I. .; HARAHAP, M. I. . The influence of international coffee prices, rupiah exchange rates, and competitor commodity prices (cocoa), on Indonesian coffee exports for the 2003-2022 period. Jurnal Mantik, [S. l.], v. 7, n. 2, p. 991-1003, 2023. DOI: 10.35335/mantik.v7i2.3997. Disponível em: https://www.ejournal.iocscience.org/index.php/mantik/article/view/3997. Acesso em: 12 sep. 2026.