MLA
Post Card Exchange (Birmingham, Ala.). At de Ole Cabin Door in Sunny Alabama : four African American children sitting and standing outside a log cabin. March 7, 1913. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/518rbnzs9c-cor.
APA, 6th edition
Post Card Exchange (Birmingham, Ala.). (March 7, 1913)[At de Ole Cabin Door in Sunny Alabama : four African American children sitting and standing outside a log cabin]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/518rbnzs9c-cor.
Chicago
Post Card Exchange (Birmingham, Ala.), At de Ole Cabin Door in Sunny Alabama : four African American children sitting and standing outside a log cabin, March 7, 1913, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/518rbnzs9c-cor.