Cita APA

Thomson, A., & Martinet, A. (1990). A Practical English Grammar: Exercises. Oxford: Oxford University Press.

Citación estilo Chicago

Thomson, A.J., y A.V Martinet. A Practical English Grammar: Exercises. Oxford: Oxford University Press, 1990.

Cita MLA

Thomson, A.J., y A.V Martinet. A Practical English Grammar: Exercises. Oxford: Oxford University Press, 1990.