MLA

Jolas, Eugène, 1894-1952. Portraits. Box 27, folder 506. 1914-51. https://collections.library.yale.edu/catalog/2004461.

APA, 6th edition

Jolas, Eugène, 1894-1952. (["Box 27, folder 506"])(1914-51)[Portraits]. https://collections.library.yale.edu/catalog/2004461.