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 "Leighton, Morris M. (Morris Morgan), b. 1887 and MacClintock, Paul and Illinois. Natural History Survey Division",Weathered zones of the drift-sheets of Illinois,,Printed by authority of the State of Illinois,1930,Report of investigations,,,,https://cir.nii.ac.jp/crid/1130000796064356992