Cite

[Horseback dancers in a sham battle]. 1054

MLA

Blazer, Charlotte Pinkerton, McClintock, Walter, 1870-1949. [Horseback dancers in a sham battle]. 1054. Lantern slides box 11. undated. https://collections.library.yale.edu/catalog/2010138.

APA, 6th edition

Blazer, Charlotte Pinkerton, & McClintock, Walter, 1870-1949. (["Lantern slides box 11"])(undated)[[Horseback dancers in a sham battle]. 1054]. https://collections.library.yale.edu/catalog/2010138.