John Calvin (2009). “Institutes of the Christian Religion Vol. 1: Translated from the Original Latin, and Collated With the Author's Last Edition in French”, p.623, Wipf and Stock Publishers
Mark Twain (2014). “Mark Twain on Common Sense: Timeless Advice and Words of Wisdom from America's Most-Revered Humorist”, p.53, Skyhorse Publishing, Inc.