APA (7th ed.) Citation

Sagan, F., & Ash, I. (2001). Bonjour tristesse (1st paperback ed.). Ecco.

Chicago Style (17th ed.) Citation

Sagan, Françoise, and Irene Ash. Bonjour Tristesse. 1st paperback ed. New York, NY: Ecco, 2001.

MLA (8th ed.) Citation

Sagan, Françoise, and Irene Ash. Bonjour Tristesse. 1st paperback ed. Ecco, 2001.

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