MLA

Plowden, David (1932). Pittsburgh Coke Company (U.S. Steel), Clairton Works. Clairton, Pennsylvania (PB-1162-103). Box 4. 1962 November. https://collections.library.yale.edu/catalog/2036663.

APA, 6th edition

Plowden, David (1932). (["Box 4"])(1962 November)[Pittsburgh Coke Company (U.S. Steel), Clairton Works. Clairton, Pennsylvania (PB-1162-103)]. https://collections.library.yale.edu/catalog/2036663.