Fatoni, A., Muhfahroyin, M., Sujarwanta, A., Sutanto, A., & Widowati, H. (2020). The Effectiveness of Coffee Leather Organic Fertilizer on The Productivity of Red Spinach (Amaranthus Tricolor L.) . Jurnal Penelitian Pertanian Terapan, 20(3), 198–203. https://doi.org/10.25181/jppt.v20i3.1678