Cita APA (7a ed.)

Tiberio, S. C. M. (2007). What's up? 2: Extra practice ; What's up? : fast finishers activities.

Cita Chicago Style (17a ed.)

Tiberio, Silvia Carolina Maldonado. What's Up? 2: Extra Practice ; What's Up? : Fast Finishers Activities. Buenos Aires, 2007.

Cita MLA (9a ed.)

Tiberio, Silvia Carolina Maldonado. What's Up? 2: Extra Practice ; What's Up? : Fast Finishers Activities. 2007.