Cite

[Photograph of twenty men, women, and children posing on deck of a steamboat]

MLA

[Photograph of Twenty Men, Women, and Children Posing on Deck of a Steamboat]. 0AD. https://collections.library.yale.edu/catalog/2014907.

APA, 6th edition

[Photograph of twenty men, women, and children posing on deck of a steamboat]. (0 C.E.). [Group portraits, Photograph albums, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2014907.