Cite

South towers, 1939 World's Fair on San Francisco bay [graphic].

MLA

Golden Gate International Exposition (1939-1940 : San Francisco, Calif.). South towers, 1939 World's Fair on San Francisco bay [graphic].. 1939?]. https://collections.library.yale.edu/catalog/2020826.

APA, 6th edition

Golden Gate International Exposition (1939-1940 : San Francisco, Calif.). (1939?])[South towers, 1939 World's Fair on San Francisco bay [graphic].]. https://collections.library.yale.edu/catalog/2020826.