Yulianti, Tria, Soetanto Abdoellah, Didik Suprayogo, and Niken Puspita Sari. “Cocoa Production As Affected by Shade Tree Species and Soil Quality”. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 34, no. 2 (August 31, 2018): 80-89. Accessed October 19, 2024. https://mail.ccrjournal.com/index.php/ccrj/article/view/316.