LAYINATUS SIFA12.01.55.0077. “SISTEM TAGIHAN PEMBAYARAN UMROH PADA SYAKIRA WISATA FARIKH ALHABSYI BERBASIS SMS BILLS PAYMENT SYSTEMS ON SMS BASED SYAKIRA UMROH FARIKH ALHABSYI TOURISM”. Information Technology and Telematics 6, no. 2 (October 26, 2016). Accessed July 23, 2024. https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/4511.