Cita APA

Tiberio, S. C., & Silvia Carolina Tiberio. (2006). Focus on grammar 3: An integrated skills approach teacher's manual. New York, NY: Pearson/Longman.

Chicago Style Citation

Tiberio, Silvia Carolina, i Silvia Carolina Tiberio. Focus On Grammar 3: An Integrated Skills Approach Teacher's Manual. New York, NY: Pearson/Longman, 2006.

Cita MLA

Tiberio, Silvia Carolina, i Silvia Carolina Tiberio. Focus On Grammar 3: An Integrated Skills Approach Teacher's Manual. New York, NY: Pearson/Longman, 2006.

Atenció: Aquestes cites poden no estar 100% correctes.