MLA

Le Deley, E. Colonies Francaises - Trocadero. 0AD. https://collections.library.yale.edu/catalog/2028943.

APA, 6th edition

Le Deley, E. (0 C.E.). Colonies Francaises - Trocadero [Photomechanical prints, Souvenir viewbooks]. https://collections.library.yale.edu/catalog/2028943.