MLA

Simpson, Randolph Linsly, 1927-1992. Studio unknown Bust length portrait of a young woman wearing a corsage and lace at the neck. Tintype, sixteenth plate. Box 7, folder 146. undated. https://collections.library.yale.edu/catalog/2002211.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 7, folder 146"])(undated)[Studio unknown Bust length portrait of a young woman wearing a corsage and lace at the neck. Tintype, sixteenth plate]. https://collections.library.yale.edu/catalog/2002211.