Rachman, D. J. (1993). Business today (7th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Rachman, David J. Business Today. 7th ed. New York: McGraw-Hill, 1993.
Lua MLA (8ú heag.)Rachman, David J. Business Today. 7th ed. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.