MLA
Metrocraft (Everett, Mass.). Greetings from White Bear Lake, Minn. : two African American boys fishing. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/938jdfn32q-cor.
APA, 6th edition
Metrocraft (Everett, Mass.). (unknown)[Greetings from White Bear Lake, Minn. : two African American boys fishing]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/938jdfn32q-cor.
Chicago
Metrocraft (Everett, Mass.), Greetings from White Bear Lake, Minn. : two African American boys fishing, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/938jdfn32q-cor.