Sumirat, Ucu. “Impact of Long Dry Season on Bean Characteristics of Robusta Coffee (Coffea Canephora)”. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 24, no. 2 (July 31, 2008). Accessed September 26, 2022. https://ccrjournal.com/index.php/ccrj/article/view/97.