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
"United States. Bureau of the Census and Cummings, John and Hill, Joseph A. (Joseph Adna)","Negro population in the United States, 1790-1915",,Arno Press,1968,The American Negro : his history and literature,,,,https://cir.nii.ac.jp/crid/1130282269107105920