APA (7th ed.) Citation

Schoenberg, I., & Maurer, J. (2012). Focus on grammar 1 (Third edition.). Pearson.

Chicago Style (17th ed.) Citation

Schoenberg, Irene, and Jay Maurer. Focus on Grammar 1. Third edition. White Plains, NY: Pearson, 2012.

MLA (9th ed.) Citation

Schoenberg, Irene, and Jay Maurer. Focus on Grammar 1. Third edition. Pearson, 2012.