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
"American University (Washington, D.C.). Foreign Area Studies and Blutstein, Howard I.",El Salvador : a country study,,"For sale by the Superintendent of Documents, U.S. Govt. Print. Off.",1979,Area handbook series,,,,https://cir.nii.ac.jp/crid/1130000796552073088