OTHMAN, Ismail Bin Lebai, Sulaman Hafeez SIDDIQUI, and Her TAUFIK. 2016. “RESISTANCE FACTORS TO COMMUNITY PARTICIPATION IN SUSTAINABLE TOURISM DEVELOPMENT IN NORTHERN SUMATRA INDONESIA”. Studia Universitatis Babeș-Bolyai Negotia 61 (3):5-17. http://193.231.18.162/index.php/subbnegotia/article/view/5156.