Ernita, Yuni, Rika Ampuh Hadi Guna, Santosa Santosa, and Nofialdi Nofialdi. “Analysis of Cocoa Industry Development Factor With System Approach in West Sumatera, Indonesia”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 36, no. 3 (October 7, 2017): 122–133. Accessed May 18, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8192.