APA-viite (7. p.)
Ryan, C. (2003). Recreational tourism: Demand and impacts. Channel View Publications.
Chicago-viite (17. p.)
Ryan, Chris. Recreational Tourism: Demand and Impacts. Clevedon, England ; Buffalo [N.Y.]: Channel View Publications, 2003.
MLA-viite (9. p.)
Ryan, Chris. Recreational Tourism: Demand and Impacts. Channel View Publications, 2003.
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