[Letter: to undisclosed recipient]
MLA
Shrewsbury, Charles Talbot, Duke of, 1660-1718. [Letter: to undisclosed recipient]. Box 1 | Folder 5. 1697 May 5. https://collections.library.yale.edu/catalog/9998673.
APA, 6th edition
Shrewsbury, Charles Talbot, Duke of, 1660-1718. (["Box 1 | Folder 5"])(1697 May 5)[[Letter: to undisclosed recipient]]. https://collections.library.yale.edu/catalog/9998673.