Não informado. (1958). Business History. Frank Cass.
Lua i Stíl Chicago (17ú heag.)Não informado. Business History. London: Frank Cass, 1958.
Lua MLA (8ú heag.)Não informado. Business History. Frank Cass, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.