APA (7th ed.) Citation

Gray, E., & Cagnet, M. (1966). Electricite optique (2nd ed.). Librairie Armand Colin.

Chicago Style (17th ed.) Citation

Gray, Elie, and Michel Cagnet. Electricite Optique. 2nd ed. Paris: Librairie Armand Colin, 1966.

MLA (8th ed.) Citation

Gray, Elie, and Michel Cagnet. Electricite Optique. 2nd ed. Librairie Armand Colin, 1966.