Nurrobifahmi, N., A. N. Flatian, T. Bachtiar, A. Citraresmini, M. Hanani, and S. Slamet. “Application of Organic Fertilizer in Sidenuk Varieties to Reduce Using Urea”. Akta Agrosia, vol. 24, no. 1, June 2021, pp. 1-8, https://ejournal.unib.ac.id/Agrosia/article/view/12366.