MLA
Hugh C. Leighton Co. (Portland, Me.). A southern ox cart. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/532d7wm3bf-cor.
APA, 6th edition
Hugh C. Leighton Co. (Portland, Me.). (unknown)[A southern ox cart]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/532d7wm3bf-cor.
Chicago
Hugh C. Leighton Co. (Portland, Me.), A southern ox cart, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/532d7wm3bf-cor.