Tunggono, A., and F. S. Papilaya. “Perancangan Aplikasi UMKM Kota Salatiga Dengan Metode Location Base Services”. Journal of Information Technology Ampera, vol. 4, no. 1, Apr. 2023, pp. 68-82, https://www.journal-computing.org/index.php/journal-ita/article/view/373.