Patsy Clairmont, Marilyn Meberg, Barbara Johnson, Luci Swindoll (1997). “Joy Breaks: 90 Devotions to Celebrate, Simplify, and Add Laughter to Your Life”, Zondervan Publishing Company
John Milton (1824). “The Poetical Works of John Milton: With Notes of Various Authors, Principally from the Edition of Thomas Newton, Charles Dunster, and Thomas Warton, to which is Prefixed, Newton's Life of Milton”, p.425