MLA

Simpson, Randolph Linsly, 1927-1992. C. Seaver, Jr., (photographer) Published by Chas Pollock, Boston Stamped recto, "The Southern Series. Jacksonville, Florida. No 47. The Cook." Stereograph, yellow card. Box 12, folder 603. circa 1870. https://collections.library.yale.edu/catalog/2111714.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 12, folder 603"])(circa 1870)[C. Seaver, Jr., (photographer) Published by Chas Pollock, Boston Stamped recto, "The Southern Series. Jacksonville, Florida. No 47. The Cook." Stereograph, yellow card]. https://collections.library.yale.edu/catalog/2111714.