APA (7th ed.) Citation

Orwell, G. (1986). Nineteen eighty-four (Repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Orwell, George. Nineteen Eighty-four. Repr. Harmondsworth: Penguin Books, 1986.

MLA (9th ed.) Citation

Orwell, George. Nineteen Eighty-four. Repr. Penguin Books, 1986.

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