Citazione Stile APA (7a Edizione)

HORNBY, A. (1975). Guide to patterns and usage in English (2nd ed.). Oxford University press.

Citazione stile Chigago Style (17a edizione)

HORNBY, A.S. Guide to Patterns and Usage in English. 2nd ed. London: Oxford University press, 1975.

Citatione MLA (9a ed.)

HORNBY, A.S. Guide to Patterns and Usage in English. 2nd ed. Oxford University press, 1975.