Three competitors line up for the start of women's horserace at the Round-Up, Pendleton, Oregon, ca. 1910

Chicago citation style
Bowman, W. S. (Walter S.). Three competitors line up for the start of women's horserace at the Round-Up, Pendleton, Oregon, ca. 1910. ca. 1910. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/1862. (Accessed July 19, 2018.)
APA citation style
Bowman, W. S. (Walter S.), (ca. 1910) Three competitors line up for the start of women's horserace at the Round-Up, Pendleton, Oregon, ca. 1910. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/1862
MLA citation style
Bowman, W. S. (Walter S.). Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/1862>.
Note: These citations are programmatically generated and may be incomplete.