Febrianti, Wahyu Niken, Wanti Mindari, and Maroeto. “Status of C-Organic, Available P and K-Dd in Rice Soil Affected by Prolonged Cypramin Amine”. Nusantara Science and Technology Proceedings 2024, no. 47 (May 26, 2025): 955–958. Accessed July 30, 2025. https://nstproceeding.com/index.php/nuscientech/article/view/1500.