Cotton, D. (2012). Market leader: Intermediate business English course book (New edition.). Hà Nội: Văn hóa thông tin.
Chicago Stili AlıntıCotton, David. Market Leader: Intermediate Business English Course Book. New edition. Hà Nội: Văn hóa thông tin, 2012.
MLA AlıntıCotton, David. Market Leader: Intermediate Business English Course Book. New edition. Hà Nội: Văn hóa thông tin, 2012.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..