APA (7th ed.) Citation

Sand, G., Sainte-Beuve, C. A., & Södergård, Ö. (1964). Les lettres de George Sand a Sainte-Beuve. Librairie Droz.

Chicago Style (17th ed.) Citation

Sand, George, Charles Augustin Sainte-Beuve, and Östen Södergård. Les Lettres De George Sand a Sainte-Beuve. Geneve: Librairie Droz, 1964.

MLA (9th ed.) Citation

Sand, George, et al. Les Lettres De George Sand a Sainte-Beuve. Librairie Droz, 1964.