@Misc{BVMC:232657, author = {Ortells Cabrera, Vicent}, author = {Querol Gómez, Antonio}, title = {El Parc Natural del Delta de l'Ebre : el turismo como complemento económico sostenible}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcpg238} }