MLA

Simpson, Randolph Linsly, 1927-1992. Reverse of a banner; ribbon at bottom: "6th United States Colored Troops"; ribbon at top: "Presented by Colored Citizens of Philadelphia, August 31, 1863"; in center flying eagle with shield and "E. Pluribus Unum" ribbon in beak. Carte de visite.. Box 11, folder 432. 1863. https://collections.library.yale.edu/catalog/2005524.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 432"])(1863)[Reverse of a banner; ribbon at bottom: "6th United States Colored Troops"; ribbon at top: "Presented by Colored Citizens of Philadelphia, August 31, 1863"; in center flying eagle with shield and "E. Pluribus Unum" ribbon in beak. Carte de visite.]. https://collections.library.yale.edu/catalog/2005524.