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. President ( : Ford) and Bullman, Daniel",Presidential country files for Africa,,Primary Source Media,2009,Gerald R. Ford and foreign affairs : The papers of president Gerald R. Ford,,,,https://cir.nii.ac.jp/crid/1130282273193548928