63. [Blackfoot Chief.]
MLA
McClintock, Walter, 1870-1949. 63. [Blackfoot Chief.]. Box 60, folder 3007. 1941. https://collections.library.yale.edu/catalog/2008451.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 60, folder 3007"])(1941)[63. [Blackfoot Chief.]]. https://collections.library.yale.edu/catalog/2008451.