APA (7th ed.) Citation

Orwell, G., Angus, I., & Orwell, S. (1970). The collected essays, journalism and letters of George Orwell. Penguin Books.

Chicago Style (17th ed.) Citation

Orwell, George, Ian Angus, and Sonia Orwell. The Collected Essays, Journalism and Letters of George Orwell. [Hammondworth, Eng.]: Penguin Books, 1970.

MLA (9th ed.) Citation

Orwell, George, et al. The Collected Essays, Journalism and Letters of George Orwell. Penguin Books, 1970.