Citazione Stile APA (7a Edizione)

Thomson, A. J., & Martinet, A. V. (1989). A practical English grammar: Exercises 1 (3rd ed., 6th impr.). Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Thomson, Audrey Jean., e Agnes V. Martinet. A Practical English Grammar: Exercises 1. 3rd ed., 6th impr. Oxford [etc.]: Oxford University Press, 1989.

Citatione MLA (9a ed.)

Thomson, Audrey Jean., e Agnes V. Martinet. A Practical English Grammar: Exercises 1. 3rd ed., 6th impr. Oxford University Press, 1989.