Não informado. (1958). International management digest. McGraw-Hill Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. International Management Digest. New York: McGraw-Hill Publications, 1958.
Lua MLA (8ú heag.)Não informado. International Management Digest. McGraw-Hill Publications, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.