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 "Powell, Charles L. (Charles Lewis) and Geological Survey (U.S.)","Age, stratigraphy, and correlation of the late Neogene Purisima Formation, central California Coast Ranges",,"U.S. Dept. of the Interior, U.S. Geological Survey",2007,Geological Survey professional paper,,9781411318489,,https://cir.nii.ac.jp/crid/1130000797751514624