Prasetyo, Andri, Bhimo Rizky Samudro, and Albertus Maqnus Soesilo. “Relationship of Cigarette Companies, Middlemen and Tobacco Farmers: Core-Periphery Analysis”. RA Journal of Applied Research 8, no. 12 (December 22, 2022): 903–907. Accessed April 6, 2025. http://rajournals.in/index.php/rajar/article/view/1063.