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 "Bown, Thomas M. and Geological Survey of Wyoming","Geology and mammalian paleontology of the Sand Creek facies, lower Willwood Formation (lower Eocene), Washakie County, Wyoming",,Geological Survey of Wyoming,1979,Memoir - the Geological Survey of Wyoming,,,,https://cir.nii.ac.jp/crid/1130282271562323072