Seidlhofer, B. (2011). Understanding English as a lingua franca. Oxford University Press.
Chicagoスタイル(17版)引用形式Seidlhofer, Barbara. Understanding English as a Lingua Franca. Oxford: Oxford University Press, 2011.
MLA(8版)引用形式Seidlhofer, Barbara. Understanding English as a Lingua Franca. Oxford University Press, 2011.
警告: この引用は必ずしも正確ではありません.