Woodrow Wilson, Howard Seavoy Leach (1925). “The Public Papers of Woodrow Wilson: College and state, educational, literary and political papers (1875-1913)”
"10 Years After 'Brokeback,' Jake Gyllenhaal Remembers Heath Ledger: "Way Beyond His Years as a Human"". Interview with Stephen Galloway, www.hollywoodreporter.com. November 25, 2015.