Abigail Adams, John Adams, L. H. Butterfield, Marc Friedlaender, Mary-Jo Kline (1975). “The Book of Abigail and John: Selected Letters of the Adams Family, 1762-1784”, p.95, UPNE
"A Defence of the Constitutions of Government". Book by John Adams. Chapter 3: "Marchamont Nedham: Errors of Government and Rules of Policy", Sixth Rule, 1787.
John Adams (1794). “A Defence of the Constitutions of Government of the United States of America: Against the Attack of M. Turgot in His Letter to Dr. Price, Dated the Twenty-second Day of March, 1778”, p.506
John Adams, Charles Francis Adams (1854). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.401
John Adams, Charles Francis Adams (1851). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.480
John Adams, Charles Francis Adams (1851). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.197