MLA

Plowden, David (1932). Canadian Pacific Railway Locomotive Engineer and Fireman, The Glen Engine Terminal. Montreal, Quebec, Canada (CPR-360-102-A). Box 77. 1960 March. https://collections.library.yale.edu/catalog/2041813.

APA, 6th edition

Plowden, David (1932). (["Box 77"])(1960 March)[Canadian Pacific Railway Locomotive Engineer and Fireman, The Glen Engine Terminal. Montreal, Quebec, Canada (CPR-360-102-A)]. https://collections.library.yale.edu/catalog/2041813.