Ritchie, B. W. (2009). Crisis and disaster management for tourism. Channel View Publications.
Lua i Stíl Chicago (17ú heag.)Ritchie, Brent W. Crisis and Disaster Management for Tourism. Bristol: Channel View Publications, 2009.
Lua MLA (9ú heag.)Ritchie, Brent W. Crisis and Disaster Management for Tourism. Channel View Publications, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.