Cita APA (7a ed.)

Moutsou, E., & Parker, S. (2002). Plus extra pre-intermediate. MM Publications.

Cita Chicago Style (17a ed.)

Moutsou, E., y S. Parker. Plus Extra Pre-intermediate. London: MM Publications, 2002.

Cita MLA (8a ed.)

Moutsou, E., y S. Parker. Plus Extra Pre-intermediate. MM Publications, 2002.