Oxenden, C., & Latham-Koenig, C. (1999). English file: Intermediate student's book. New York: Oxford University Press.
استشهاد بنمط شيكاغوOxenden, Clive., و Christina Latham-Koenig. English File: Intermediate Student's Book. New York: Oxford University Press, 1999.
MLA استشهادOxenden, Clive., و Christina Latham-Koenig. English File: Intermediate Student's Book. New York: Oxford University Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.