MLA

Phillips, Ulrich Bonnell, 1877-1934. Scenes (farm). Box 2, folder 10. Circa 1900-circa 1930. https://collections.library.yale.edu/catalog/10020001.

APA, 6th edition

Phillips, Ulrich Bonnell, 1877-1934. (["Box 2, folder 10"])(Circa 1900-circa 1930)[Scenes (farm)]. https://collections.library.yale.edu/catalog/10020001.