Mufidah Salmah, Afifah, and Mahbub Hefdzil Akbar. 2026. “From Straits Brokers to Javanese Werek: The Dynamics of Coolie Recruitment for the Deli Tobacco Plantations, East Sumatra, 1880–1915”. Jurnal Kawasan Sejarah 3 (2):144-57. https://journal.uinsgd.ac.id/index.php/jks/article/view/60399.