APA (7th ed.) Citation

Waterlot, G., Beugnies, A., & Bintz, J. (1973). Ardenne. Masson.

Chicago Style (17th ed.) Citation

Waterlot, Gérard, Alphonse Beugnies, and Jacques Bintz. Ardenne. Paris: Masson, 1973.

MLA (8th ed.) Citation

Waterlot, Gérard, et al. Ardenne. Masson, 1973.