Cita APA

Thomson, . A. J., & Martinet, A. (1986). Practical English grammar (4th ed.). OUP.

Citación estilo Chicago

Thomson, A J., y A.V Martinet. Practical English Grammar. 4th ed. Delhi: OUP, 1986.

Cita MLA

Thomson, A J., y A.V Martinet. Practical English Grammar. 4th ed. OUP, 1986.