Cita APA (7a ed.)

Vince, M., & Emmerson, P. (2003). First certificate language practice with key: English grammar and vocabulary. Macmillan.

Cita Chicago Style (17a ed.)

Vince, Michael, y Paul Emmerson. First Certificate Language Practice with Key: English Grammar and Vocabulary. Towns Road: Macmillan, 2003.

Cita MLA (9a ed.)

Vince, Michael, y Paul Emmerson. First Certificate Language Practice with Key: English Grammar and Vocabulary. Macmillan, 2003.