MLA

Simpson, Randolph Linsly, 1927-1992. Ross & Thomson, Photographers to the Queen, Edinburgh Black man seated on very low stool; child stands, straddling his right leg, facing him; showing him small object in her right hand. Small basket in foreground. Carte de visite. Box 11, folder 482. circa 1864. https://collections.library.yale.edu/catalog/2032269.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 482"])(circa 1864)[Ross & Thomson, Photographers to the Queen, Edinburgh Black man seated on very low stool; child stands, straddling his right leg, facing him; showing him small object in her right hand. Small basket in foreground. Carte de visite]. https://collections.library.yale.edu/catalog/2032269.