Cita APA (7a ed.)

Bárcena, E. (2005). Live Spanish Grammar for English Speaker: Key. enClave-ELE.

Cita Chicago Style (17a ed.)

Bárcena, Elena. Live Spanish Grammar for English Speaker: Key. Madrid: enClave-ELE, 2005.

Cita MLA (8a ed.)

Bárcena, Elena. Live Spanish Grammar for English Speaker: Key. enClave-ELE, 2005.