Barrall, I. (2008). Market leader: Elementary business English teacher'r resource book (New edition.). New York: Longman.
استشهاد بنمط شيكاغوBarrall, Irene. Market Leader: Elementary Business English Teacher'r Resource Book. New edition. New York: Longman, 2008.
MLA استشهادBarrall, Irene. Market Leader: Elementary Business English Teacher'r Resource Book. New edition. New York: Longman, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.