Cite

Unidentified, outgoing (copies)

MLA

Jeleński, Konstanty A. (Konstanty Aleksander), 1922-1987. Unidentified, outgoing (copies). Box 6, folder 154. 1968. https://collections.library.yale.edu/catalog/16612889.

APA, 6th edition

Jeleński, Konstanty A. (Konstanty Aleksander), 1922-1987. (["Box 6, folder 154"])(1968)[Unidentified, outgoing (copies)]. https://collections.library.yale.edu/catalog/16612889.