"Zeszyt 11" (La Messa), notebook
MLA
Wat, Aleksander, 1900-1967. "Zeszyt 11" (La Messa), notebook. Box 33, folder 770. 1963 January. https://collections.library.yale.edu/catalog/2054647.
APA, 6th edition
Wat, Aleksander, 1900-1967. (["Box 33, folder 770"])(1963 January)["Zeszyt 11" (La Messa), notebook]. https://collections.library.yale.edu/catalog/2054647.