Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.121, Graphic Arts Books
Alexander Hamilton (1851). “The works of Alexander Hamilton: comprising his correspondence, and his political and official writings, exclusive of the federalist, civil and military”, p.237
Henry David Thoreau, Jeffrey S. Cramer (2007). “I to Myself: An Annotated Selection from the Journal of Henry D. Thoreau”, p.158, Yale University Press