Ihwan Hamonangan , A., Khotami, and R. Ade Febrian. “The Effectiveness of the Transportation Agency’s Role in Monitoring Illegal Travel”. Al-Zayn : Jurnal Ilmu Sosial & Hukum, vol. 2, no. 2, Aug. 2024, pp. 1-22, doi:10.61104/alz.v2i2.296.