R. D. Widyastuti, K. Hendarto, A. Rahmat, H. A. Warganegara, I. Listiana, and S. Asmara, “The Combination of Biofertilizer and Organic Fertilizer to Improve Shallot (Allium ascalonicum L.) Production”, JTCS, vol. 8, no. 01, pp. 16–21, Mar. 2021.