Rita Erlinda, Elva Rahmi Fitri, Nelson, and Deni Sorel. “Analysis of Factors Affecting Coffee Plantation Business Production in Bukik Barisan, Lima Puluh Kota”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 71, no. 1 (December 24, 2023): 181–186. Accessed July 3, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/16405.