APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.