Cita APA (7a ed.)

Dubicka, I., & O'Keeffe, M. (2016). Market leader: Advanced : business english couse book (3rd edition extra.). Pearson Education.

Cita Chicago Style (17a ed.)

Dubicka, Iwonna, y Margaret O'Keeffe. Market Leader: Advanced : Business English Couse Book. 3rd edition extra. Harlow: Pearson Education, 2016.

Cita MLA (9a ed.)

Dubicka, Iwonna, y Margaret O'Keeffe. Market Leader: Advanced : Business English Couse Book. 3rd edition extra. Pearson Education, 2016.