MLA

A Prospecting Party. Britton & Rey, 0AD. https://collections.library.yale.edu/catalog/2015952.

APA, 6th edition

A prospecting party. (0 C.E.). [Pictorial works, Pictorial lettersheets California San Francisco, Lithographs]. Britton & Rey. https://collections.library.yale.edu/catalog/2015952.