| 1. | Global Report on the power of youth travel : Affiliate members report: volume thirteen / World Tourism Organization (UNWTO)Data Publicação: 2014 Col.autor: OMT COTA(S): 19923 |  | |
| 2. | Impact assessment in tourism economics / Álvaro Matias; Peter Nijkamp e João RomãoAutor: Matias, Álvaro; Nijkamp, Peter; Romão, João Data Publicação: 2016 Co col. autor sec.: Springer COTA(S): 20174 | | |