APA (7th ed.) Citation

Cotton, D., Falvey, D., & Kent, S. (2006). Market leader: Upper intermediate business English. Longman.

Chicago Style (17th ed.) Citation

Cotton, David, David Falvey, and Simon Kent. Market Leader: Upper Intermediate Business English. Harlow: Longman, 2006.

MLA (9th ed.) Citation

Cotton, David, et al. Market Leader: Upper Intermediate Business English. Longman, 2006.