Plaque

Chicago citation style
Thomas Bentley, English, 1730 – 1780, Josiah Wedgwood, English, 1730 – 1795. Plaque. ca. 1778. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1952-166-30-a_b&repo=DPLA. (Accessed November 21, 2018.)
APA citation style
Thomas Bentley, English, 1730 – 1780, Josiah Wedgwood, English, 1730 – 1795, (ca. 1778) Plaque. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1952-166-30-a_b&repo=DPLA
MLA citation style
Thomas Bentley, English, 1730 – 1780, Josiah Wedgwood, English, 1730 – 1795. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1952-166-30-a_b&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.