MLA

Bainton, Roland H. (Roland Herbert), 1894-1984. Banner, William. 55, folder 809. undated. https://collections.library.yale.edu/catalog/33598976.

APA, 6th edition

Bainton, Roland H. (Roland Herbert), 1894-1984. (["55, folder 809"])(undated)[Banner, William]. https://collections.library.yale.edu/catalog/33598976.