| hsmai.org | Hospitality Sales and Marketing Association International (HSMAI) - Greater Phoe |
| hftp.org | Hftp |
| hcima.org.uk | Hotel and Catering International Management Association |
| eurochrie.org | The European Federation of the International Council on Hotel, Restaurant & |
| dehoga.de | DEHOGA Deutscher Hotel- und Gaststättenverband e.V. |
| hotrec.org | Hotrec : Hotels, Restaurants And Cafés In Europe |
| fbtc.com | Hotel Discounts And Savings For Business Travellers |
| esca.org | Exhibition Services & Contractors Association |
| hedna.org | HEDNA - Hotel Electronic Distribution Network Association |
| greenhotels.com | Green Hotels Association |
Italy , Lazio , Rome