MLA

Simpson, Randolph Linsly, 1927-1992. Studio unknown Full length large group portrait of "Simm's Cadets" twelve black boys in [zouave or turcos] uniforms, with rifles and fixed bayonets, kneeling and standing en garde. Cabinet photograph. Box 9, folder 276. circa 1895. https://collections.library.yale.edu/catalog/2002328.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 276"])(circa 1895)[Studio unknown Full length large group portrait of "Simm's Cadets" twelve black boys in [zouave or turcos] uniforms, with rifles and fixed bayonets, kneeling and standing en garde. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002328.