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 "MacClintock, Paul and Illinois State Geological Survey",Physiographic divisions of the area covered by the Illinoian drift-sheet in southern Illinois . Recent discoveries of Pre-Illinoian drift in southern Illinois,,Printed by Authority of the State of Illinois,1929,Report of investigations,,,,https://cir.nii.ac.jp/crid/1130000798010557952