Simbolon, A. M., T. S. Ayu Purba, R. D. Simbolon, Y. S. Sianipar, and H. M. G. Putri Aruan. “Tahap Tindak Lanjut (Follow-Up)”. Economics and Digital Business Review, vol. 6, no. 2, July 2025, pp. 1438-46, doi:10.37531/ecotal.v6i2.2802.