Cite

Unknown photographer Group portrait: four sailors in work uniforms aboard ship. Photographic postcard

MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer Group portrait: four sailors in work uniforms aboard ship. Photographic postcard. Box 25. circa 1918. https://collections.library.yale.edu/catalog/16172735.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 25"])(circa 1918)[Unknown photographer Group portrait: four sailors in work uniforms aboard ship. Photographic postcard]. https://collections.library.yale.edu/catalog/16172735.