Cite

[Cowboy on horseback converses with leader of wagon train], lobby card, 11 x 14

MLA

[Cowboy on Horseback Converses with Leader of Wagon Train], Lobby Card, 11 x 14. 0AD. https://collections.library.yale.edu/catalog/2019946.

APA, 6th edition

[Cowboy on horseback converses with leader of wagon train], lobby card, 11 x 14. (0 C.E.). https://collections.library.yale.edu/catalog/2019946.