APA (7th ed.) Citation

Carr, A. (1994). The only way to stop smoking permanently. Penguin Books.

Chicago Style (17th ed.) Citation

Carr, Allen. The Only Way to Stop Smoking Permanently. London: Penguin Books, 1994.

MLA (9th ed.) Citation

Carr, Allen. The Only Way to Stop Smoking Permanently. Penguin Books, 1994.