Private correspondence of David Hume : with several distinguished persons, between the years 1761 and 1776, now first published from the originals
MLA
Hume, David. Private Correspondence of David Hume: with Several Distinguished Persons, Between the Years 1761 and 1776, Now First Published From the Originals. London: [Henry Colburn and Co.], 1820
APA, 7th edition
Hume, D. (1820). Private correspondence of David Hume: with several distinguished persons, between the years 1761 and 1776, now first published from the originals. London: [Henry Colburn and Co.]
Chicago, 17th edition
Hume, David. Private correspondence of David Hume: with several distinguished persons, between the years 1761 and 1776, now first published from the originals. London: [Henry Colburn and Co.], 1820