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 "Ashley, Geo. H. (George Hall) and Clapp, Frederick G. (Frederick Gardner) and Pennsylvania. Bureau of Topographic and Geologic Survey",Curwensville quadrangle : geology and mineral resources,,[Pennsylvania] Topographic and Geologic Survey,1940,Topographic and geologic atlas of Pennsylvania,,,,https://cir.nii.ac.jp/crid/1130000795785125248