MLA

Simpson, Randolph Linsly, 1927-1992. Husted & Co., Philadelphia Full length portrait of Emma Williams in spectacles, seated, leaning on table, wearing fashionable dress with overall dotted pattern. Cabinet photograph. Box 9, folder 171. 1896. https://collections.library.yale.edu/catalog/2002223.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 171"])(1896)[Husted & Co., Philadelphia Full length portrait of Emma Williams in spectacles, seated, leaning on table, wearing fashionable dress with overall dotted pattern. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002223.