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 "Hoover, J. Edgar (John Edgar) and United States. Congress. House. Committee on Un-American Activities","Menace of communism : statement of J. Edgar Hoover ... before the Committee on un-American activities, House of Representatives, March 26, 1947",,Government Printing Office,1947,Document,,,,https://cir.nii.ac.jp/crid/1130282272729320192