MLA

McClintock, Walter, 1870-1949. 217. [Sunset on Cutbank River at the Home of Siksikaikoan (Little Blackfoot)/William Jackson.]. Box 61, folder 3046. 1938. https://collections.library.yale.edu/catalog/2008490.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 61, folder 3046"])(1938)[217. [Sunset on Cutbank River at the Home of Siksikaikoan (Little Blackfoot)/William Jackson.]]. https://collections.library.yale.edu/catalog/2008490.