Cite

[Autograph letter signed, 1820 Jan. 27, to Georgiana Augusta Keats]

MLA

Keats, John, 1795-1821. [Autograph letter signed, 1820 Jan. 27, to Georgiana Augusta Keats]. [1820 Jan.] 27. https://collections.library.yale.edu/catalog/2013952.

APA, 6th edition

Keats, John, 1795-1821. ([1820 Jan.] 27)[[Autograph letter signed, 1820 Jan. 27, to Georgiana Augusta Keats]]. https://collections.library.yale.edu/catalog/2013952.