Rizaldo, Rifqi. “DESAIN SISTEM INFORMASI PERSEDIAAN MATERIAL PT WASKITA BETON PRECAST BERBASIS MICROSOFT VISUAL BASIC 6.0”. Jurnal Valtech 1, no. 2 (December 20, 2019): 23-29. Accessed August 25, 2024. https://ejournal.itn.ac.id/index.php/valtech/article/view/389.