Hart, P. T. . a. W. (2013). Understanding prime-ministerial performance: Comperative perspectives. Oxford University Press.
Tohutoru Kātū Chicago (17th ed.)Hart, Paul T. and Walter. Understanding Prime-ministerial Performance: Comperative Perspectives. Oxford: Oxford University Press, 2013.
Tohutoro MLA (9th ed.)Hart, Paul T. and Walter. Understanding Prime-ministerial Performance: Comperative Perspectives. Oxford University Press, 2013.
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