MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer Full length formal portrait of John Williams; elderly man seated next to table with his top hat on it, cane leans against table. Carte de visite. Box 11, folder 477. circa 1862. https://collections.library.yale.edu/catalog/2003950.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 477"])(circa 1862)[Unknown photographer Full length formal portrait of John Williams; elderly man seated next to table with his top hat on it, cane leans against table. Carte de visite]. https://collections.library.yale.edu/catalog/2003950.