R. Hamdani Harahap and Yeni Absah, “SUSTAINABLE COASTAL NATURAL RESOURCES UTILIZATION MODEL (CASE STUDY OF SEI NAGALAWAN VILLAGE, PERBAUNGAN DISTRICT, SERDANG BEDAGAI REGENCY, NORTH SUMATRA PROVINCE)”, J Arch.Egyptol, vol. 17, no. 8, pp. 298-310, Dec. 2020.