Cite

Century 21 Exposition (1962: Seattle, Washington)

MLA

Heller, Alfred E. Century 21 Exposition (1962: Seattle, Washington). 1962. https://collections.library.yale.edu/catalog/2029212.

APA, 6th edition

Heller, A. E. (1962). Century 21 Exposition (1962: Seattle, Washington). https://collections.library.yale.edu/catalog/2029212.