| 1. | Global tourism : the next decade / edited by William F. TheobaldData Publicação: 1994 Resp- Sec.: Theobald, William F. COTA(S): 5447 |  | |
| 2. | The context, meaning and scope of tourism / William F. TheobaldAutor: Theobald, William F. |  | |
| 3. | Global tourism / William F. TheobaldAutor: Theobald, William F. Data Publicação: 1998 COTA(S): 5447-A; 5447-A.a | | |
| 4. | The meaning, scope and measurement of travel and tourism / William F. TheobaldAutor: Theobald, William F. | | |