MLA

Broch de Rothermann, H. F. (1910-1994). Other propaganda samples and notes. Box 9. circa 1944-circa 2001. https://collections.library.yale.edu/catalog/2016776.

APA, 6th edition

Broch de Rothermann, H. F. (1910-1994). (["Box 9"])(circa 1944-circa 2001)[Other propaganda samples and notes]. https://collections.library.yale.edu/catalog/2016776.