APA (7th ed.) Citation

Orwell, G. (1990). Nineteen eighty-four (Repr.). Penguin.

Chicago Style (17th ed.) Citation

Orwell, George. Nineteen Eighty-four. Repr. Harmondsworth [etc.]: Penguin, 1990.

MLA (9th ed.) Citation

Orwell, George. Nineteen Eighty-four. Repr. Penguin, 1990.

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