Clarke, D., Macfarlane, M., & Williams, S. (2009). Focus on Success: Ausgabe Soziales. Cornelsen.
Chicagoスタイル(17版)引用形式Clarke, David, Michael Macfarlane, , Steve Williams. Focus on Success: Ausgabe Soziales. Berlin: Cornelsen, 2009.
MLA(8版)引用形式Clarke, David, et al. Focus on Success: Ausgabe Soziales. Cornelsen, 2009.
警告: この引用は必ずしも正確ではありません.