Cite

[Marriage certificate: Henry William Herbert and Miss Sarah Barker]

MLA

[Marriage Certificate: Henry William Herbert and Miss Sarah Barker]. 1840. https://collections.library.yale.edu/catalog/9998637.

APA, 6th edition

[Marriage certificate: Henry William Herbert and Miss Sarah Barker]. (1840). [Certificates, Marriage certificates, Seals]. https://collections.library.yale.edu/catalog/9998637.