APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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