Cite

[William Farnum posed with horse and heroine], lobby card, 11 x 14

MLA

[William Farnum Posed with Horse and Heroine], Lobby Card, 11 x 14. 0AD. https://collections.library.yale.edu/catalog/2019875.

APA, 6th edition

[William Farnum posed with horse and heroine], lobby card, 11 x 14. (0 C.E.). https://collections.library.yale.edu/catalog/2019875.