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.9
John Adams, Abigail Adams, Thomas Jefferson (1988). “The Adams-Jefferson Letters: The Complete Correspondence Between Thomas Jefferson and Abigail and John Adams”
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
John Adams, Daniel LEONARD, Jonathan SEWALL (1819). “Novanglus and Massachusettensis; or, political essays, published in ... 1774 and 1775, on the principal points of controversy, between Great Britain and her colonies; the former by John Adams ... the latter by Jonathan Sewall [or rather, Daniel Leonard] ... To which are added a number of letters lately written by President Adams to the Hon. William Tudor, etc”, p.25
"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.