Ryan, J. A. (1950). Capital and Labor. New York.
Lua i Stíl Chicago (17ú heag.)Ryan, John A. Capital and Labor. New York, 1950.
Lua MLA (8ú heag.)Ryan, John A. Capital and Labor. New York, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.