Lua APA (7ú heag.)

Clarke, D., & Macfarlane, M. (1999). Focus on Business: David Clarke und Michael Macfarlane (New edition.). Cornelsen & Oxford.

Lua i Stíl Chicago (17ú heag.)

Clarke, David, agus Michael Macfarlane. Focus on Business: David Clarke Und Michael Macfarlane. New edition. Berlin: Cornelsen & Oxford, 1999.

Lua MLA (8ú heag.)

Clarke, David, agus Michael Macfarlane. Focus on Business: David Clarke Und Michael Macfarlane. New edition. Cornelsen & Oxford, 1999.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.