Cita APA

O'Neill, R., Duckworth, M., & Gude, K. (1997). New sucess at first certificate. Oxford: Oxford University Press.

Citación estilo Chicago

O'Neill, Robert, Michael Duckworth, and Kathy Gude. New Sucess At First Certificate. Oxford: Oxford University Press, 1997.

Cita MLA

O'Neill, Robert, Michael Duckworth, and Kathy Gude. New Sucess At First Certificate. Oxford: Oxford University Press, 1997.