Cotton, D. (2002). Market leader: Pre-Intermediate business english (Course book). New York: Longman.
استشهاد بنمط شيكاغوCotton, David. Market Leader: Pre-Intermediate Business English (Course Book). New York: Longman, 2002.
MLA استشهادCotton, David. Market Leader: Pre-Intermediate Business English (Course Book). New York: Longman, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.