Mulyono, H. “The Influence of Regulation Policy in Local Wisdom of Coastal Fisherman Welfare in Percut Sei Tuan Subdistrictdeli Serdangregency”. International Journal of Social Sciences and Humanities Invention, vol. 5, no. 6, June 2018, pp. 4781-7, doi:10.18535/ijmsci/v5i6.04.