Cotton, D., Driscoll, N. O., Falvey, D., Kent, S., Lê, T. H. G. t., & Lê, T. M. T. G. t. (2017). Elementary market leader: Business English course book and business English practice file (3rd edition.). Hà Nội: Thời đại.

Cotton, David, Nina O'||chr(39)||' Driscoll, David Falvey, Simon Kent, Thúy Hiền Giới thiệu Lê, et Thị Minh Tâm Giới thiệu Lê. Elementary Market Leader: Business English Course Book and Business English Practice File. 3rd edition. Hà Nội: Thời đại, 2017.

Cotton, David, et al. Elementary Market Leader: Business English Course Book and Business English Practice File. 3rd edition. Hà Nội: Thời đại, 2017.