Cita APA

Thompson, A. J., & Martinet, A. V. (2009). A practical english grammar. Nwe York: Oxford.

Citación estilo Chicago

Thompson, A. J,, and A. V. Martinet. A Practical English Grammar. Nwe York: Oxford, 2009.

Cita MLA

Thompson, A. J,, and A. V. Martinet. A Practical English Grammar. Nwe York: Oxford, 2009.