1. | | Col.autor: European Travel Commission COTA(S): 13938-Dg | |
2. | | Data Publicação: 2012 Col.autor: OMT wttc COTA(S): 16245-Dg | |
3. | | Data Publicação: 2011 Col.autor: World Travel & Tourism Council COTA(S): 14073-Dg | |
4. | | Autor: Assaf, A. George Coautor: ; Gil-Alana, Luis A. Barros, Carlos Pestana COTA(S): RE-1610 | |
5. | | Col.autor: OMT COTA(S): 13937; 13937-Dg | |
6. | | Autor: Abbott, Andrew Coautor: ; Vita , Glauco De Altinay, Levent COTA(S): RE-1193 | |
7. | | Autor: Charles, Jacky S. Coautor: ; Jr, Thomas M. fullerton COTA(S): RE-1822 | |