Cite

Igor Ivan Sikorsky writings, 1943-1947

MLA

Sikorsky, Igor Ivan, 1889-1972. Igor Ivan Sikorsky writings, 1943-1947. Box. https://collections.library.yale.edu/catalog/17351388.

APA, 6th edition

Sikorsky, Igor Ivan, 1889-1972. (["Box"])[Igor Ivan Sikorsky writings, 1943-1947]. https://collections.library.yale.edu/catalog/17351388.