“Coffee Marketing Mechanism: Social Relations Between Farmers, Collectors, Certification Cooperatives, and Exporters in Aceh, Indonesia” (2019) Pelita Perkebunan (a Coffee and Cocoa Research Journal), 35(2), pp. 156–166. Available at: https://mail.ccrjournal.com/index.php/ccrj/article/view/383 (Accessed: 30 April 2026).