MLA
L.L. Cook Co. (Milwaukee, Wis.). Entrance to the Grand Hotel : Mackinac Island, Michigan. 1955. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqdr-cor.
APA, 6th edition
L.L. Cook Co. (Milwaukee, Wis.). (1955)[Entrance to the Grand Hotel : Mackinac Island, Michigan]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqdr-cor.
Chicago
L.L. Cook Co. (Milwaukee, Wis.), Entrance to the Grand Hotel : Mackinac Island, Michigan, 1955, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqdr-cor.