Laidler, H. W. (1924). Roads to freedom; a syllabus for discussion groups. League for Industrial Democracy.
Lua i Stíl Chicago (17ú heag.)Laidler, Harry Wellington. Roads to Freedom; a Syllabus for Discussion Groups. New York City: League for Industrial Democracy, 1924.
Lua MLA (9ú heag.)Laidler, Harry Wellington. Roads to Freedom; a Syllabus for Discussion Groups. League for Industrial Democracy, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.