The secretary's assistant; exhibiting the various and most correct modes of superscription, commencement, and conclusion of letters to persons of every degree of rank ..
MLA
Kingdom, William. The Secretary's Assistant: Exhibiting the Various and Most Correct Modes of Superscription, Commencement, and Conclusion of Letters to Persons of Every Degree of Rank .. [4th ed.] London: Whittaker, 1826
APA, 7th edition
Kingdom, W. (1826). The secretary's assistant: exhibiting the various and most correct modes of superscription, commencement, and conclusion of letters to persons of every degree of rank .. [4th ed.] London: Whittaker
Chicago, 17th edition
Kingdom, William. The secretary's assistant: exhibiting the various and most correct modes of superscription, commencement, and conclusion of letters to persons of every degree of rank .. [4th ed.] London: Whittaker, 1826