APA (7th ed.) Citation

Debska, A. (1984). Upgrade your English. Oxford University Press.

Chicago Style (17th ed.) Citation

Debska, Anita. Upgrade Your English. Oxford: Oxford University Press, 1984.

MLA (9th ed.) Citation

Debska, Anita. Upgrade Your English. Oxford University Press, 1984.

Warning: These citations may not always be 100% accurate.