Keith Ferrazzi, Tahl Raz (2014). “Never Eat Alone, Expanded and Updated: And Other Secrets to Success, One Relationship at a Time”, p.39, Crown Business
Alexander Pope, John Wilson Croker, Whitwell Elwin, William John Courthope (1871). “The Works of Alexander Pope: New Ed. Including Several Hundred Unpublished Letters, and Other New Materials, Collected in Part by John Wilson Croker. With Introd. and Notes by Whitwell Elwin”, p.87