Erwiyono, Rudy, Achmad Sucahyo, Suyono ., and Sugeng Winarso. “Effectiveness of Foliar Application of Potassium on Flowering and Fruiting of Cocoa”. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 22, no. 1 (May 1, 2006). Accessed November 5, 2024. https://ccrjournal.com/index.php/ccrj/article/view/26.