Tony Griffin. (2002). Sustainable tourism: A global perspective. (ed.). Elsevier science limited.
Lua i Stíl Chicago (17ú heag.)Tony Griffin. Sustainable Tourism: A Global Perspective. ed. Butterworth-Heinemann LON.: Elsevier science limited, 2002.
Lua MLA (9ú heag.)Tony Griffin. Sustainable Tourism: A Global Perspective. ed. Elsevier science limited, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.