MLA

Simpson, Randolph Linsly, 1927-1992. S.A. Dexter, Successor to S.B. Brown, Providence, RI Portrait of John Williams; full length formal portrait of elderly man with cane, standing with no props. Carte de Visite. Box 11, folder 478. circa 1862. https://collections.library.yale.edu/catalog/2004010.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 478"])(circa 1862)[S.A. Dexter, Successor to S.B. Brown, Providence, RI Portrait of John Williams; full length formal portrait of elderly man with cane, standing with no props. Carte de Visite]. https://collections.library.yale.edu/catalog/2004010.