MLA

Darrot, Paul Jean Gaston, 1892-1958. Chavonne, Construction d'un pont (construction of a bridge) (#A-124). Box 2, folder 19. circa 1914-circa 1918. https://collections.library.yale.edu/catalog/10616869.

APA, 6th edition

Darrot, Paul Jean Gaston, 1892-1958. (["Box 2, folder 19"])(circa 1914-circa 1918)[Chavonne, Construction d'un pont (construction of a bridge) (#A-124)]. https://collections.library.yale.edu/catalog/10616869.