WIDOWATI, S.; GINAYA, G.; TRIYUNI, N. N. Penta helix model to develop ecotourism: Empowering the community for economic and ecological sustainability. International Journal of Social Sciences and Humanities, [S. l.], v. 3, n. 2, p. 31–46, 2019. DOI: 10.29332/ijssh.v3n2.288. Disponível em: http://www.sciencescholar.us/journal/index.php/ijssh/article/view/288. Acesso em: 17 apr. 2026.