Akbar, Arasy Ghazali. “The Impact of a Procurement Implementation and Government Internal Control System on Goods Services Procurement Fraud Prevention by Using Organization Ethical Culture As a Moderating Variable”. Jurnal Economia 15, no. 1 (April 15, 2019): 69–81. Accessed February 2, 2026. https://journal.uny.ac.id/index.php/economia/article/view/23618.