Não informado. (1947). Business Education Forum. National Business Education Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Business Education Forum. Washington: National Business Education Association, 1947.
Lua MLA (8ú heag.)Não informado. Business Education Forum. National Business Education Association, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.