MLA

Simpson, Randolph Linsly, 1927-1992. H.C. Phillips, and Bro., N.W. Cor. Ninth & Chestnut Sts., Philadelphia. H.C. Phillips, R.R. Phillips Half length portrait, young black woman seated with white baby. Woman wears hair net, brooch at throat. Carte de visite. Box 11, folder 344. circa 1870. https://collections.library.yale.edu/catalog/2004014.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 344"])(circa 1870)[H.C. Phillips, and Bro., N.W. Cor. Ninth & Chestnut Sts., Philadelphia. H.C. Phillips, R.R. Phillips Half length portrait, young black woman seated with white baby. Woman wears hair net, brooch at throat. Carte de visite]. https://collections.library.yale.edu/catalog/2004014.