Anthony Trollope (2015). “The Prime Minister (Unabridged): Parliamentary Novel from the prolific English novelist, known for The Warden, Barchester Towers, Doctor Thorne, The Last Chronicle of Barset, Can You Forgive Her? and Phineas Finn”, p.281, e-artnow
Speech at the Cow Palace, San Francisco, California, on November 02, 1960. "John F. Kennedy Quotations: Profiles in Courage Quotations", www.jfklibrary.org.