APA (7th ed.) Citation

Orwell, G., & Harmer, D. (1991). Nineteen eighty-four. Longman.

Chicago Style (17th ed.) Citation

Orwell, George, and David Harmer. Nineteen Eighty-four. Essex,England: Longman, 1991.

MLA (9th ed.) Citation

Orwell, George, and David Harmer. Nineteen Eighty-four. Longman, 1991.

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