Ryan, S. (2020). Theorizing Outdoor Recreation and Ecology. 1st ed. 2015. Palgrave Macmillan UK.
Trích dẫn kiểu ChicagoRyan, Sean. Theorizing Outdoor Recreation and Ecology. 1st Ed. 2015. Palgrave Macmillan UK, 2020.
MLA citiranjeRyan, Sean. Theorizing Outdoor Recreation and Ecology. 1st Ed. 2015. Palgrave Macmillan UK, 2020.
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