Não informado. (1955). McGraw Hill international management digest. McGraw-Hill Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. McGraw Hill International Management Digest. New York: McGraw-Hill Publications, 1955.
Lua MLA (8ú heag.)Não informado. McGraw Hill International Management Digest. McGraw-Hill Publications, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.