Wijaya S, Andhika A, Ilyas M. DEVELOPMENT OF SALES INFORMATION SYSTEM FOR SME WITH THE WATERFALL METHOD: A GROCERY STORE BSR CASE. J. Tek. Inform. (JUTIF) [Internet]. 2022Aug.20 [cited 2024May19];3(4):1043-9. Available from: https://jutif.if.unsoed.ac.id/index.php/jurnal/article/view/263