Cite

Hartmann, Thomas de: biographical sketch and reviews

MLA

Draper, Muriel, 1886-1952. Hartmann, Thomas de: biographical sketch and reviews. Box 20, folder 642. n.d.. https://collections.library.yale.edu/catalog/32213083.

APA, 6th edition

Draper, Muriel, 1886-1952. (["Box 20, folder 642"])(n.d.)[Hartmann, Thomas de: biographical sketch and reviews]. https://collections.library.yale.edu/catalog/32213083.