Cita APA

Koch, R. S. (2006). Focus on grammar: An integrated skills approach. New York, NY: Pearson/Longman.

Chicago Style Citation

Koch, Rachel Spack. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.

Cita MLA

Koch, Rachel Spack. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.

Atenció: Aquestes cites poden no estar 100% correctes.