APA (7th ed.) Citation

Smiles, S. (1986). Self-help. Penguin Books.

Chicago Style (17th ed.) Citation

Smiles, Samuel. Self-help. Harmondsworth [u.a.]: Penguin Books, 1986.

MLA (9th ed.) Citation

Smiles, Samuel. Self-help. Penguin Books, 1986.

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