The wagon train en route
MLA
Sully, Alfred, 1821-1879. The wagon train en route. [ca. 1856]. https://collections.library.yale.edu/catalog/2068071.
APA, 6th edition
Sully, Alfred, 1821-1879. ([ca. 1856])[The wagon train en route]. https://collections.library.yale.edu/catalog/2068071.