George Bernard Shaw (2015). “George Bernard Shaw: Collected Articles, Lectures, Essays and Letters: Thoughts and Studies from the Renowned Dramaturge and Author of Mrs. Warren’s Profession, Pygmalion, Arms and The Man, Saint Joan, Caesar and Cleopatra, Androcles And The Lion”, p.418, e-artnow
"Liberty and Democracy". Baltimore Evening Sun (April 13, 1925) as quoted in "A Second Mencken Chrestomathy: A New Selection from the Writings of America's Legendary Editor, Critic, and Wit" edited by Terry Teachout (p. 35), 1994.