MLA

Cassirer, Ernst, 1874-1945. Conference of Methods in Philosophy and the Sciences, address by Kurt Riezler, typescript carbon. Box 8, folder 181. 1945 May 6. https://collections.library.yale.edu/catalog/10563580.

APA, 6th edition

Cassirer, Ernst, 1874-1945. (["Box 8, folder 181"])(1945 May 6)[Conference of Methods in Philosophy and the Sciences, address by Kurt Riezler, typescript carbon]. https://collections.library.yale.edu/catalog/10563580.