APA (7th ed.) Citation

Courtillon, J., & Salins, G. d. (1991). Libre echange 2.

Chicago Style (17th ed.) Citation

Courtillon, Janine, and Geneviève-Dominique de Salins. Libre Echange 2. Paris, 1991.

MLA (9th ed.) Citation

Courtillon, Janine, and Geneviève-Dominique de Salins. Libre Echange 2. 1991.