Gerken, H. K. (2009). The democracy index: Why our election system is failing and how to fix it. Princeton University Press.
Chicagoスタイル(17版)引用形式Gerken, Heather K. The Democracy Index: Why Our Election System Is Failing and How to Fix It. Princeton: Princeton University Press, 2009.
MLA(9版)引用形式Gerken, Heather K. The Democracy Index: Why Our Election System Is Failing and How to Fix It. Princeton University Press, 2009.
警告: この引用は必ずしも正確ではありません.