MLA

McClintock, Walter, 1870-1949. G734. Cut Bank Canyon Camp. Small Lodge. West. Heavy Sunset Clouds Lighted Up.. Box 107, folder 5000. 1906 Fall. https://collections.library.yale.edu/catalog/10450760.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 107, folder 5000"])(1906 Fall)[G734. Cut Bank Canyon Camp. Small Lodge. West. Heavy Sunset Clouds Lighted Up.]. https://collections.library.yale.edu/catalog/10450760.