Não informado. (1941). The American Journal of Economics and Sociology. Francis Neilson Fund.
Lua i Stíl Chicago (17ú heag.)Não informado. The American Journal of Economics and Sociology. New York: Francis Neilson Fund, 1941.
Lua MLA (8ú heag.)Não informado. The American Journal of Economics and Sociology. Francis Neilson Fund, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.