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Alexander Hamilton, James Madison, John Jay, Henry Barton Dawson (1864). “The Fœderalist: A Collection of Essays, Written in Favor of the New Constitution, as Agreed Upon by the Fœderal Convention, September 17, 1787. Reprinted from the Original Text. With an Historical Introduction and Notes”, p.60, New York : C. Scribner ; London : Sampson Low
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"Federalist No. 10. The Same Subject Continued: The Union as a Safeguard Against Domestic Faction and Insurrection" by James Madison, www.congress.gov. November 23, 1787.