Cite

527, 611d. Rocky Mountain Sheep. Photograph by Norman McClintock.

MLA

McClintock, Walter, 1870-1949. 527, 611d. Rocky Mountain Sheep. Photograph by Norman McClintock.. Box 63, folder 3261. 1947. https://collections.library.yale.edu/catalog/2008823.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 63, folder 3261"])(1947)[527, 611d. Rocky Mountain Sheep. Photograph by Norman McClintock.]. https://collections.library.yale.edu/catalog/2008823.