Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.16, Peter Pauper Press, Inc.
Benjamin Franklin, Jared Sparks (1856). “The Works of Benjamin Franklin: Containing Several Political and Historical Tracts Not Included in Any Former Edition, and Many Letters, Official and Private Not Hitherto Published; with Notes and a Life of the Author”, p.226
Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.14, Peter Pauper Press, Inc.