[Letter : William Wordsworth to Biggs and Cottle]
MLA
Wordsworth, William, 1770-1850. [Letter : William Wordsworth to Biggs and Cottle]. Folder: Letter 16. [ca. 1800]. https://collections.library.yale.edu/catalog/16169075.
APA, 6th edition
Wordsworth, William, 1770-1850. (["Folder: Letter 16"])([ca. 1800])[[Letter : William Wordsworth to Biggs and Cottle]]. https://collections.library.yale.edu/catalog/16169075.