MLA

Ephemera Relating to Social Organizations in Butte, Montana, 1889-1912. 0AD. https://collections.library.yale.edu/catalog/2006077.

APA, 6th edition

Ephemera relating to social organizations in Butte, Montana, 1889-1912. (0 C.E.). [Pictorial works, Theater programs Montana Butte, Invitations Montana Butte, Printed ephemera Montana Butte, Dance cards Montana Butte, Advertisements Montana Butte, Photographs Montana Butte]. https://collections.library.yale.edu/catalog/2006077.