Cita APA (7a ed.)

Thomson, A. J., & Martinet, A. V. (1970). A practical english grammar (2nd ed.). Oxford University Press.

Cita Chicago Style (17a ed.)

Thomson, A. J., y A. V. Martinet. A Practical English Grammar. 2nd ed. London: Oxford University Press, 1970.

Cita MLA (8a ed.)

Thomson, A. J., y A. V. Martinet. A Practical English Grammar. 2nd ed. Oxford University Press, 1970.