Cita APA (7th ed.)

Cotton, D., Falvey, D., & Kent, S. (2006). Market leader: Upper intermediate business English course book (2a. ed.). Pearson Education Limited.

Cita Chicago (17th ed.)

Cotton, David, David Falvey, i Simon Kent. Market Leader: Upper Intermediate Business English Course Book. 2a. ed. Essex: Pearson Education Limited, 2006.

Cita MLA (9th ed.)

Cotton, David, et al. Market Leader: Upper Intermediate Business English Course Book. 2a. ed. Pearson Education Limited, 2006.