Fitri, Yulita Eka. “Analysis of Internal Control System in Cash Receipt at PT Angkasa Migasindo Batu Raja”. INVEST : Jurnal Inovasi Bisnis dan Akuntansi 4, no. 2 (August 24, 2023): 542-547. Accessed July 15, 2025. http://journal.al-matani.com/index.php/invest/article/view/644.