Sihombing, M., M. Sari, and H. Chrisna. “Analysis of the Internal Control System in Marketing Activities to Improve Sales at Isaura Collection Store”. Jurnal Akuntansi, Manajemen Dan Bisnis Digital, Vol. 5, no. 4, Oct. 2026, pp. 2111-8, doi:10.37676/jambd.v5i4.12670.