MLA

Simpson, Randolph Linsly, 1927-1992. Chas. Paxson, Photographer, New York, NY Full length portrait of Rebecca standing beside mirror with reflection in profile; Stamp recto, beneath photograph: "REBECCA. A slave girl from New Orleans." Carte de visite. Box 11, folder 454. 1864. https://collections.library.yale.edu/catalog/2003933.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 454"])(1864)[Chas. Paxson, Photographer, New York, NY Full length portrait of Rebecca standing beside mirror with reflection in profile; Stamp recto, beneath photograph: "REBECCA. A slave girl from New Orleans." Carte de visite]. https://collections.library.yale.edu/catalog/2003933.