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
"Williams, Michael, 1947 July 6-",Unnatural doubts : epistemological realism and the basis of scepticism,,Princeton University Press,1996,Princeton paperbacks,,069101115X,,https://cir.nii.ac.jp/crid/1130282269374521344