Watts, D. (2007). Pressure groups. Edinburgh University Press.
Chicagoスタイル(17版)引用形式Watts, Duncan. Pressure Groups. Edinburgh: Edinburgh University Press, 2007.
MLA(9版)引用形式Watts, Duncan. Pressure Groups. Edinburgh University Press, 2007.
警告: この引用は必ずしも正確ではありません.