MLA

Davison, Frederick Trubee, 1896-1974. Florida training site. Box 17, folder 261-262. [ca. 1918-1919]. https://collections.library.yale.edu/catalog/10014249.

APA, 6th edition

Davison, Frederick Trubee, 1896-1974. (["Box 17, folder 261-262"])([ca. 1918-1919])[Florida training site]. https://collections.library.yale.edu/catalog/10014249.