Reference
- Kunde , N. F. , ed. . Proceedings of the fourth annual meeting of the college recreation association . Seattle, WA. Olympic Hotel .
References
- Waters , S. 1992 . Travel industry world yearbook: The big picture , New York : Childs & Waters .
- World Travel and Tourism Council . 1992 . World travel and tourism council report: Travel and tourism 2005 an economic/business perspective , New York : Author .