Bárcena, E. (2005). Live Spanish Grammar for English Speaker: Key. enClave-ELE.
芝加哥风格引文Bárcena, Elena. Live Spanish Grammar for English Speaker: Key. Madrid: enClave-ELE, 2005.
MLA引文Bárcena, Elena. Live Spanish Grammar for English Speaker: Key. enClave-ELE, 2005.
警告：这些引文格式不一定是100％准确.