BUTLER W RICHARD ED. (2006). TOURISM AREA LIFE CYCLE: APPLICATIONS AND MODIFICATION VOL 1. CHANNEL VIEW PUBLICATIONS.
Chicago-referens (17:e uppl.)BUTLER W RICHARD ED. TOURISM AREA LIFE CYCLE: APPLICATIONS AND MODIFICATION VOL 1. CLEVEDON: CHANNEL VIEW PUBLICATIONS, 2006.
MLA-referens (9:e uppl.)BUTLER W RICHARD ED. TOURISM AREA LIFE CYCLE: APPLICATIONS AND MODIFICATION VOL 1. CHANNEL VIEW PUBLICATIONS, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.