Newsome, D., Dowling, R. K., & Moore, S. A. (2013). Natural area tourism: Ecology, impacts and management. Channel View Publications.
Chicago-viite (17. p.)Newsome, David, Ross K. Dowling, ja Susan A. Moore. Natural Area Tourism: Ecology, Impacts and Management. Second edition: Channel View Publications, 2013.
MLA-viite (9. p.)Newsome, David, et al. Natural Area Tourism: Ecology, Impacts and Management. Channel View Publications, 2013.
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