Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Clarke, David, Michael Macfarlane, e Michael Benford. Focus on Success: Ausgabe Wirtschaft Workbook. Berlin: Cornelsen, 2009.

Citatione MLA (8a ed.)

Clarke, David, et al. Focus on Success: Ausgabe Wirtschaft Workbook. Cornelsen, 2009.