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
"Greub, Werner Hildbert and Halperin, Stephen and Vanstone, Ray",Cohomology of principal bundles and homogeneous spaces,,Academic Press,1976,Pure and applied mathematics,,0123027039,,https://cir.nii.ac.jp/crid/1130000796167094144