Harper, F. A. (1949). Liberty, a path to its recovery. Foundation for Economic Education.
Lua i Stíl Chicago (17ú heag.)Harper, F. A. Liberty, a Path to Its Recovery. Irvington-on-Hudson, N.Y: Foundation for Economic Education, 1949.
Lua MLA (8ú heag.)Harper, F. A. Liberty, a Path to Its Recovery. Foundation for Economic Education, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.