G1216a. Two Medicine Valley.
MLA
McClintock, Walter, 1870-1949. G1216a. Two Medicine Valley.. Box 118, folder 5573. 1912. https://collections.library.yale.edu/catalog/10451409.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 118, folder 5573"])(1912)[G1216a. Two Medicine Valley.]. https://collections.library.yale.edu/catalog/10451409.