DAFISCO, R.; WULANDARI, S.; ARIFIN, N. F. Gambir, Timber and Coffee: A History of the Trade in Forest and Plantation Products on the East Coast of Sumatra in the 19th Century. Journal of Philology and Historical Review, [S. l.], v. 2, n. 2, p. 151–163, 2025. DOI: 10.61540/jphr.v2i2.99. Disponível em: https://journals.regalia-institute.com/index.php/JPHR/article/view/99. Acesso em: 30 may. 2026.