MLA
Middletown Post Card Co. (Middletown, Ohio). Armco Colored Center, Middletown, Ohio [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxk-cor.
APA, 6th edition
Middletown Post Card Co. (Middletown, Ohio). (unknown)[Armco Colored Center, Middletown, Ohio [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxk-cor.
Chicago
Middletown Post Card Co. (Middletown, Ohio), Armco Colored Center, Middletown, Ohio [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxk-cor.