著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Roe, Dilys and Leader-Williams, Nigel and Dalal-Clayton, Barry","Take only photographs, leave only footprints: the environmental impacts of wildlife tourism",,International Institute for Environment and Development,1997,Wildlife and development series,,,,https://cir.nii.ac.jp/crid/1130000795006458368