APA Citation

Schoenberg, I. E. M. (2012). Focus on grammar 1 / Irene E. Schoenberg; Jay Maurer (3a ed.). Estados Unidos de América.

Chicago Style Citation

Schoenberg, Irene E; Maurer. Focus On Grammar 1 / Irene E. Schoenberg; Jay Maurer. 3a ed. Estados Unidos de América, 2012.

MLA Citation

Schoenberg, Irene E; Maurer. Focus On Grammar 1 / Irene E. Schoenberg; Jay Maurer. 3a ed. Estados Unidos de América, 2012.

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