APA (7th ed.) Citation

Sagan, F. (1956). A Certain smile. John Murray.

Chicago Style (17th ed.) Citation

Sagan, Francoise. A Certain Smile. John Murray, 1956.

MLA (8th ed.) Citation

Sagan, Francoise. A Certain Smile. John Murray, 1956.

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