Cite

[Letter book]

MLA

Castillion, Sir Francis, 1561-1638. [Letter book]. [ca. 1590-1638]. https://collections.library.yale.edu/catalog/16564222.

APA, 6th edition

Castillion, Sir Francis, 1561-1638. ([ca. 1590-1638])[[Letter book]]. https://collections.library.yale.edu/catalog/16564222.