Asir, M., R. Darma, M. Mahyuddin, and M. Arsyad. “Characteristic of Cocoa Commodity Supply Chain in West Sulawesi”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 36, no. 4, Oct. 2017, pp. 275-8, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8315.