James Madison, Gaillard Hunt, James Brown Scott (1999). “The Debates in the Federal Convention of 1787: Which Framed the Constitution of the United States of America”, p.690, The Lawbook Exchange, Ltd.
Noah Webster (1787). “An Examination Into the Leading Principles of the Federal Constitution Proposed by the Late Convention Held at Philadelphia: With Answers to the Principal Objections that Have Been Raised Against the System”, p.43