Cita APA (7th ed.)

Clarke, D., & Macfarlane, M. (2009). Focus on Success: Ausgabe Technik. Cornelsen.

Cita Chicago (17th ed.)

Clarke, David, i Michael Macfarlane. Focus on Success: Ausgabe Technik. Berlin: Cornelsen, 2009.

Cita MLA (8th ed.)

Clarke, David, i Michael Macfarlane. Focus on Success: Ausgabe Technik. Cornelsen, 2009.