Schroeder, R. C. (1989). An outline of American Government. USA: USIA.
シカゴスタイル引用形Schroeder, Richard C. An Outline of American Government. USA: USIA, 1989.
MLA引用形式Schroeder, Richard C. An Outline of American Government. USA: USIA, 1989.
警告: この引用は必ずしも正確ではありません.