Diana, E., and A. As’ad. “ANALISIS DAN PERANCANGAN SISTEM INFORMASI TRACER STUDY BERBASIS WEB”. Jurnal Ilmiah Media Sisfo, vol. 11, no. 2, Oct. 2017, pp. 817-29, https://ejournal.unama.ac.id/index.php/mediasisfo/article/view/576.