Cita APA (7a ed.)

Six, A. L. (2014). Upgrade your Spanish. Routledge.

Cita Chicago Style (17a ed.)

Six, Abigail Lee. Upgrade Your Spanish. London, [England] ; New York, New York: Routledge, 2014.

Cita MLA (9a ed.)

Six, Abigail Lee. Upgrade Your Spanish. Routledge, 2014.