Cita APA

Michael Duckworth. (2000). Countdown to first certificate ( Student's book ). Oxford: Oxford Univ. Press.

Citación estilo Chicago

Michael Duckworth. Countdown to First Certificate ( Student's Book ). Oxford: Oxford Univ. Press, 2000.

Cita MLA

Michael Duckworth. Countdown to First Certificate ( Student's Book ). Oxford: Oxford Univ. Press, 2000.

Precaución: Estas citas no son 100% exactas.