Lua APA (7ú heag.)

Clarke, D., & Macfarlane, M. (2006). Focus on Business (New edition.). Cornelsen.

Lua i Stíl Chicago (17ú heag.)

Clarke, David, agus Michael Macfarlane. Focus on Business. New edition. Berlin: Cornelsen, 2006.

Lua MLA (8ú heag.)

Clarke, David, agus Michael Macfarlane. Focus on Business. New edition. Cornelsen, 2006.

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