APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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