Sihombing, Sarimonang, and Darna Sitanggang. “ANALISIS DESAIN PRODUK DAN JASA”. Jurnal Riset Akuntansi & Keuangan 4, no. 2 (June 11, 2019): 137–156. Accessed November 21, 2024. https://ejournal.ust.ac.id/index.php/JRAK/article/view/456.