Cite

New York World's Fair (1939-1940)

MLA

Heller, Alfred E. New York World's Fair (1939-1940). 1939. https://collections.library.yale.edu/catalog/2029184.

APA, 6th edition

Heller, A. E. (1939). New York World's Fair (1939-1940). https://collections.library.yale.edu/catalog/2029184.