Cite

"Einige Grundgedanken zur Neugestaltung des DIFF": three typescript copies, corrected

MLA

Stepun, Fedor, 1884-1965. "Einige Grundgedanken zur Neugestaltung des DIFF": three typescript copies, corrected. Box 67, folder 2064. n.d.. https://collections.library.yale.edu/catalog/16495074.

APA, 6th edition

Stepun, Fedor, 1884-1965. (["Box 67, folder 2064"])(n.d.)["Einige Grundgedanken zur Neugestaltung des DIFF": three typescript copies, corrected]. https://collections.library.yale.edu/catalog/16495074.