MLA
Hugh C. Leighton Co., Manufacturers (Portland, Me.). Ocean Point, Maine : boat landing and Negro Island. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0171vhhmjc-cor.
APA, 6th edition
Hugh C. Leighton Co., Manufacturers (Portland, Me.). (unknown)[Ocean Point, Maine : boat landing and Negro Island]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0171vhhmjc-cor.
Chicago
Hugh C. Leighton Co., Manufacturers (Portland, Me.), Ocean Point, Maine : boat landing and Negro Island, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0171vhhmjc-cor.