[Letter : 1936 March 30, F. Scott Fitzgerald to Gerald and Sara Murphy]
MLA
Fitzgerald, F. Scott (Francis Scott), 1896-1940. [Letter : 1936 March 30, F. Scott Fitzgerald to Gerald and Sara Murphy]. Box 3 | Folder 55. [1936 March 30]. https://collections.library.yale.edu/catalog/11859158.
APA, 6th edition
Fitzgerald, F. Scott (Francis Scott), 1896-1940. (["Box 3 | Folder 55"])([1936 March 30])[[Letter : 1936 March 30, F. Scott Fitzgerald to Gerald and Sara Murphy]]. https://collections.library.yale.edu/catalog/11859158.