Adi, T., and W. Eko Nur. “SISTEM PENYALURAN GAS ELPIJI KE AGEN PADA SPPBE PT. PURI KENCANA MERDEKA UTAMA SEMARANG BERBASIS WEB”. Information Technology and Telematics, Vol. 8, no. 2, Mar. 2019, https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/6627.