Robertus Rossa Widjayanto0. (2013). SISTEM INFORMASI PENJUALAN HIPA ( HIMPUNAN PELUKIS AMBARAWA ) DI AMBARAWA SEMARANG BERBASIS WEB DENGAN E-COMMERCE. Information Technology and Telematics, 2(2). Retrieved from https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/1449