MLA

Darrot, Paul Jean Gaston, 1892-1958. Mouvement américain à Château Thierry (American movement at Château Thierry). Box 2, folder 63. circa 1914-circa 1918. https://collections.library.yale.edu/catalog/10616913.

APA, 6th edition

Darrot, Paul Jean Gaston, 1892-1958. (["Box 2, folder 63"])(circa 1914-circa 1918)[Mouvement américain à Château Thierry (American movement at Château Thierry)]. https://collections.library.yale.edu/catalog/10616913.