Cotton, D., Falvey, D., & Kent, S. (2003). Market leader: Course book : pre-intermediate business english. Longman.
Cita Chicago Style (17a ed.)Cotton, David, David Falvey, y Simon Kent. Market Leader: Course Book : Pre-intermediate Business English. England: Longman, 2003.
Cita MLA (8a ed.)Cotton, David, et al. Market Leader: Course Book : Pre-intermediate Business English. Longman, 2003.
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