Posner, R. A. (1999). An affair of state: The investigation, impeachment, and trial of President Clinton. Harvard University Press.
Style de citation Chicago (17e éd.)Posner, Richard A. An Affair of State: The Investigation, Impeachment, and Trial of President Clinton. Cambridge (Mass.) ; London: Harvard University Press, 1999.
Style de citation MLA (9e éd.)Posner, Richard A. An Affair of State: The Investigation, Impeachment, and Trial of President Clinton. Harvard University Press, 1999.
警告：這些引文格式不一定是100％准確.