Nere, Mitchell, and Duwi Buani. “PENERAPAN METODE WATERFALL PADA SISTEM INFORMASI JASA LAUNDRY (SIJALY) JENSCHAX LAUNDY BEKASI”. Jurnal Techno Nusa Mandiri 15, no. 2 (September 15, 2018): 69-76. Accessed September 23, 2019. http://ejournal.nusamandiri.ac.id/index.php/techno/article/view/14.