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 "Berta, Annalisa","New Enaliarctos (Pinnipedimorpha) from the Oligocene and Miocene of Oregon and the role of ""Enaliarctids"" in Pinniped phylogeny",,Smithsonian Institution Press,1991,Smithsonian contributions to paleobiology,,,,https://cir.nii.ac.jp/crid/1130282272722320384