APA (7th ed.) Citation

Irving, W. H. (1975). The providence of wit in the English letter writers. Octagon Books.

Chicago Style (17th ed.) Citation

Irving, William Henry. The Providence of Wit in the English Letter Writers. New York: Octagon Books, 1975.

MLA (8th ed.) Citation

Irving, William Henry. The Providence of Wit in the English Letter Writers. Octagon Books, 1975.