A letter to Her Grace the Duchess of Devonshire.
APA Citation
Combe, W., Cavendish, G. Spencer. (1777). A letter to Her Grace the Duchess of Devonshire. London: Fielding and Walker.
MLA Citation
Combe, William, 1742-1823, and Georgiana Spencer Cavendish. A Letter to Her Grace the Duchess of Devonshire. London: Fielding and Walker, 1777.
Warning: These citations may not always be complete (especially for serials).