Não informado. (1961). Industrial Relations. University of California, Institute of Industrial Relations.
Lua i Stíl Chicago (17ú heag.)Não informado. Industrial Relations. Berkeley, Calif: University of California, Institute of Industrial Relations, 1961.
Lua MLA (8ú heag.)Não informado. Industrial Relations. University of California, Institute of Industrial Relations, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.