SIANIPAR, M. Effect of Product, Price, Location and Tourism Promotion of Interest in Visiting Lake Toba Tourist Attraction. Journal of Management Science (JMAS), [S. l.], v. 2, n. 3, Juli, p. 50–55, 2019. Disponível em: https://exsys.iocspublisher.org/index.php/JMAS/article/view/31. Acesso em: 2 may. 2026.