Cite

[Commonplace book], [ca.1815-1820].

MLA

[Commonplace Book], [Ca.1815-1820]. 0AD. https://collections.library.yale.edu/catalog/16309680.

APA, 6th edition

[Commonplace book], [ca.1815-1820]. (0 C.E.). [Commonplace book]. https://collections.library.yale.edu/catalog/16309680.