Robson, W. A. (1955). The British system of government. Longmans.
Chicagoスタイル(17版)引用形式Robson, William A. The British System of Government. Londres: Longmans, 1955.
MLA(9版)引用形式Robson, William A. The British System of Government. Longmans, 1955.
警告: この引用は必ずしも正確ではありません.