Keller, M. (2010). The unbearable heaviness of governing: The Obama administration in historical perspective. Hoover Institution Press.
芝加哥风格引文Keller, Morton. The Unbearable Heaviness of Governing: The Obama Administration in Historical Perspective. Stanford, Calif.: Hoover Institution Press, 2010.
MLA引文Keller, Morton. The Unbearable Heaviness of Governing: The Obama Administration in Historical Perspective. Hoover Institution Press, 2010.
警告：这些引文格式不一定是100％准确.