APA (7th ed.) Citation

Camus, A., & Gilbert, S. (1961). The outsider. Penguin Books.

Chicago Style (17th ed.) Citation

Camus, Albert, and Stuart Gilbert. The Outsider. Harmondsworth: Penguin Books, 1961.

MLA (8th ed.) Citation

Camus, Albert, and Stuart Gilbert. The Outsider. Penguin Books, 1961.

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