MLA

Keller, Deane, 1901-1992. "Campo Tures, Bolzano, loading train". Box 26, folder 84. 1940-1960 (inclusive), 1943-1946 (bulk). https://collections.library.yale.edu/catalog/10019249.

APA, 6th edition

Keller, Deane, 1901-1992. (["Box 26, folder 84"])(1940-1960 (inclusive), 1943-1946 (bulk))["Campo Tures, Bolzano, loading train"]. https://collections.library.yale.edu/catalog/10019249.