Rogers, J., & John Rogers. (2006). Market leader upper intermediate business English practice file. Harlow: Longman.
استشهاد بنمط شيكاغوRogers, John, و John Rogers. Market Leader Upper Intermediate Business English Practice File. Harlow: Longman, 2006.
MLA استشهادRogers, John, و John Rogers. Market Leader Upper Intermediate Business English Practice File. Harlow: Longman, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.