A. M. . Rizki, E. Y. . Puspaningrum, A. S. . Indrawanti, and F. P. . Adityawan, “Testing of the Monitoring and Evaluation System for Subsidized Fertilizer using the Black Box Method”, Nusantara Sci. Tech. Proc., vol. 2024, no. 41, pp. 389–393, May 2024, doi: 10.11594/nstp.2024.4163.