Sasmita, K.D. (2017) “Application of Biochar and Organic Fertilizer on Acid Soil as Growing Medium for Cacao (Theobroma cacao L.) Seedlings”, International Journal of Sciences: Basic and Applied Research (IJSBAR), 36(5), pp. 261–273. Available at: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/8073 (Accessed: 18 September 2025).