Slovic, Scott. “Savouring What Remains of the World’s Wildness: John Muir, Tree-Climbing, and Experiential, Outdoor Education”. Journal of Literary Studies, vol. 35, no. 4, Dec. 2019, pp. 108-22, https://www.unisapressjournals.co.za/index.php/jls/article/view/11546.