13. | | Autor: Head, Jeremy Coautor: ; Lucas, Rosemary | |
14. | | Data Publicação: [199?] Col.autor: Association Internationale de l Hotelerie Co col. autor: FUAAV. Fédération Universelle des Associations d'Agences de Voyages COTA(S): 7548 | |
15. | | Autor: Olsen, Michael D. | |
16. | | Autor: Johns, Nick | |
17. | | Autor: Ateljevic, Irena Coautor: ; Doorne, Stephen | |
18. | | Autor: Davies, Brian Coautor: ; Downward, Paul | |
19. | | Autor: Leu, Walter | |
20. | | Autor: Weber, Karin | |
21. | | Data Publicação: 1995 Resp- Sec.: Fortuna, Carlos Mendes, António Gama Ferreira, Claudino Estanque, Elísio Abreu, Paula COTA(S): 8998 | |
22. | | Data Publicação: 2008 Col.autor: OMT COTA(S): 12137; 12137-a; 12137-Dg | |
23. | | Autor: Sherwyn, David Coautor: ; Eigen, Zev, co-autor Wagner, Paul, co-autor COTA(S): RE-1268 | |
24. | | Autor: Pan, Grace Coautor: ; Sparks, Beverley, co-autor Fulop, Liz, co-autor COTA(S): RE-111 | |