| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Handbook on Tourism Product Development | 978-92-844-1395-9 (92-844-1395-8) | 2011 | World Tourism Organization (UNWTO) |
| The Gulf Cooperation Council Outbound Travel Market with Special Focus on Europe as a Tourism Destination | 978-92-844-2012-4 (92-844-2012-1) | 2018 | World Tourism Organization (Unwto) |
E C. · E.E. " · E.T. · European Commission · European Travel Commission · T. C.