Cita APA (7a ed.)

Harris, M., & Mower, D. S. (2006). New opportunities: Intermediate : teacher's book (New ed.).

Cita Chicago Style (17a ed.)

Harris, Michael, y David Sikorzynska Mower. New Opportunities: Intermediate : Teacher's Book. New ed. Harlow, 2006.

Cita MLA (9a ed.)

Harris, Michael, y David Sikorzynska Mower. New Opportunities: Intermediate : Teacher's Book. New ed. 2006.