Hoyle, L. H. (1989). Managing conventions and group business. Educational Institute of the American Hotel & Motel Association.
Chicago-referens (17:e uppl.)Hoyle, Leonard H. Managing Conventions and Group Business. East Lansing, Mich: Educational Institute of the American Hotel & Motel Association, 1989.
MLA-referens (9:e uppl.)Hoyle, Leonard H. Managing Conventions and Group Business. Educational Institute of the American Hotel & Motel Association, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.