MLA

Bates, Anson York, 1799-1879, author. Manuscript notes of lectures by James Gould, at the Litchfield Law School, taken in 1820, by Anson Bates. 1820.. https://collections.library.yale.edu/catalog/16135834.

APA, 6th edition

Bates, Anson York, 1799-1879, author. (1820.)[Manuscript notes of lectures by James Gould, at the Litchfield Law School, taken in 1820, by Anson Bates]. https://collections.library.yale.edu/catalog/16135834.