welch, s. .. a. (1990). American government. West Pub. Co..
Chicagoスタイル(17版)引用形式welch, susan ...[et. al]. American Government. Saint Paul: West Pub. Co., 1990.
MLA(9版)引用形式welch, susan ...[et. al]. American Government. West Pub. Co., 1990.
警告: この引用は必ずしも正確ではありません.