Lombu, Faduhusi, and Erwin Panggabean. “Building Systems Testing Method Using Ishihara Color Blindness”. Journal of Computer Networks, Architecture and High Performance Computing 2, no. 2 (January 1, 2020): 218–221. Accessed September 4, 2026. https://itscience-indexing.com/jurnal/index.php/CNAPC/article/view/403.