Travis, A. S. (2011). Planning for tourism, leisure and sustainability: International case studies. CAB International.
Lua i Stíl Chicago (17ú heag.)Travis, Anthony S. Planning for Tourism, Leisure and Sustainability: International Case Studies. Cambridge, Mass.: CAB International, 2011.
Lua MLA (9ú heag.)Travis, Anthony S. Planning for Tourism, Leisure and Sustainability: International Case Studies. CAB International, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.