MLA

Simpson, Randolph Linsly, 1927-1992. Studio unknown Full length portrait, lady standing with fur collar and muff. Tintype, sixth plate. Box 7, folder 84. circa 1875. https://collections.library.yale.edu/catalog/2002141.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 7, folder 84"])(circa 1875)[Studio unknown Full length portrait, lady standing with fur collar and muff. Tintype, sixth plate]. https://collections.library.yale.edu/catalog/2002141.