Gaya APA

Maurer, J., Schoenberg, I, E. (2006, 200). Focus on GRAMMAR : an integrated skills approach (Second Edition). White Plains: Pearson Education.

Gaya MLA

Maurer, Jay., Schoenberg, Irene, E.. "Focus on GRAMMAR : an integrated skills approach". Second Edition White Plains: Pearson Education, 2006, 200. Text.