MLA

Simpson, Randolph Linsly, 1927-1992. Studio unknown Three quarter length portrait of Reverend Smith in clerical dress resting left arm on vasiform baluster. Tintype, paper cased, sixth plate. Box 7, folder 131. circa 1880. https://collections.library.yale.edu/catalog/2002187.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 7, folder 131"])(circa 1880)[Studio unknown Three quarter length portrait of Reverend Smith in clerical dress resting left arm on vasiform baluster. Tintype, paper cased, sixth plate]. https://collections.library.yale.edu/catalog/2002187.