Edmond Jabes, Edmond Jabès, Rosmarie Waldrop (1991). “The Book of Questions: Volume I [The Book of Questions, The Book of Yukel, Return to the Book]”, p.58, Wesleyan University Press
Theodore Roosevelt (2015). “Theodore Roosevelt on Bravery: Lessons from the Most Courageous Leader of the Twentieth Century”, p.78, Skyhorse Publishing, Inc.