Citazione Stile APA (7a Edizione)

Thomson, A. J., & Martinet, A. V. (1989). A practical English grammar (4th ed., 7th impr.). Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Thomson, Audrey Jean., e Agnes V. Martinet. A Practical English Grammar. 4th ed., 7th impr. Oxford: Oxford University Press, 1989.

Citatione MLA (9a ed.)

Thomson, Audrey Jean., e Agnes V. Martinet. A Practical English Grammar. 4th ed., 7th impr. Oxford University Press, 1989.