Ningsih, Sudarmi, Yudi Agusman, Laode Asrun Asis, Rahmat Hidayat, and Abd. Kahar Muzakkir. 2022. “The Supervisory Function of PT ASDP over Ferry Service Providers at Kolaka Port”. SIGn Journal of Social Science 3 (1), 38-54. https://doi.org/10.37276/sjss.v3i1.321.