MLA

Oson, Jacob, 1765 or 1766-1828. A search for truth, or an inquiry for the origin of the African nation : an address, delivered at New-Haven in March, and at New-York in April, 1817. 1817.. https://collections.library.yale.edu/catalog/31912019.

APA, 6th edition

Oson, Jacob, 1765 or 1766-1828. (1817.)[A search for truth, or an inquiry for the origin of the African nation : an address, delivered at New-Haven in March, and at New-York in April, 1817]. https://collections.library.yale.edu/catalog/31912019.