MLA

Jordan, Viola Baxter, 1887-1973. Bryher. Box 1, folder 16-17. 1947-48. https://collections.library.yale.edu/catalog/2036429.

APA, 6th edition

Jordan, Viola Baxter, 1887-1973. (["Box 1, folder 16-17"])(1947-48)[Bryher]. https://collections.library.yale.edu/catalog/2036429.