Lua APA (7ú heag.)
Ryan, C. (2003). Recreational tourism: Demand and impacts. Channel View Publications.
Lua i Stíl Chicago (17ú heag.)
Ryan, Chris. Recreational Tourism: Demand and Impacts. Clevedon, England ; Buffalo [N.Y.]: Channel View Publications, 2003.
Lua MLA (9ú heag.)
Ryan, Chris. Recreational Tourism: Demand and Impacts. Channel View Publications, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.