Essays and treatises on several subjects ...
APA Citation
Hume, D. (1825). Essays and treatises on several subjects ... New ed. Edinburgh: Printed for Bell & Bradfute, and W. Blackwood; [etc., etc.].
MLA Citation
Hume, David, 1711-1776. Essays And Treatises On Several Subjects ... New ed. Edinburgh: Printed for Bell & Bradfute, and W. Blackwood; [etc., etc.], 1825.
Warning: These citations may not always be complete (especially for serials).