Rudyard Kipling (2015). “Complete Poetry of Rudyard Kipling: Complete 570+ Poems in One Volume: Songs from Novels and Stories, The Seven Seas Collection, Ballads and Barrack-Room Ballads, An Almanac of Twelve Sports, The Five Nations, The Years Between…”, p.596, e-artnow
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.