C. O. de Souza, M. L. Emmendoerfer, and M. E. C. G. Knupp, “Environmental Issue: peripheral dimension in a tourism policy?”, Rev. Tur. Anál., vol. 28, no. 3, pp. 450–473, Nov. 2017, doi: 10.11606/issn.1984-4867.v28i3p450-473.