Candra, Ifan Aulia, and Eri Samah. “ The Effect of Tofu Liquid Waste and Organic Mulch on the Growth of Cocoa (Theobroma Cacao L.) Nursery Plants in a Polybag”. Journal of Applied Agricultural Science and Technology 6, no. 2 (August 31, 2021): 171-179. Accessed January 31, 2023. http://jaast.org/index.php/jaast/article/view/56.