Sitepu, Edy, 		Rismawati, Rismawati, 		Comala, Dewi, 		Berutu, Edi, 		Haro, Jamardua, AND 		Edy Rangkuti, Agus.
"STRUCTURAL MODELS FOR SUSTAINABLE TOURISM DEVELOPMENT IN MEDAN CITY" <em>International Journal of Applied Sciences in Tourism and Events</em> [Online], Volume 3 Number 2 (13 December 2019)