Wormald, A. (1973). International business. Pan Books.
Lua i Stíl Chicago (17ú heag.)Wormald, Avison. International Business. London: Pan Books, 1973.
Lua MLA (9ú heag.)Wormald, Avison. International Business. Pan Books, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.