APA (7th ed.) Citation

Carr's, A. (1987). Allen Carr's easy way to stop smoking: Third edition (Third edition.). Penguin Books.

Chicago Style (17th ed.) Citation

Carr's, Allen. Allen Carr's Easy Way to Stop Smoking: Third Edition. Third edition. London: Penguin Books, 1987.

MLA (9th ed.) Citation

Carr's, Allen. Allen Carr's Easy Way to Stop Smoking: Third Edition. Third edition. Penguin Books, 1987.