“The Effect of Tofu Dregs Compost and NPK Fertilizer the Growth and Production of Purple Eggplan (Solanum Melongena L.)”. Jurnal Natur Indonesia 20, no. 1 (April 20, 2022): 15–23. Accessed April 21, 2025. https://ijae-unri.ejournal.unri.ac.id/index.php/natur/article/view/1784.