APA (7th ed.) Citation

Walpole, H., Mason, W., & Lewis, W. S. (1955). Horace Walpole's correspondence with William Mason. Oxford University Press [u.a.].

Chicago Style (17th ed.) Citation

Walpole, Horace, William Mason, and Wilmarth S. Lewis. Horace Walpole's Correspondence with William Mason. London: Oxford University Press [u.a.], 1955.

MLA (9th ed.) Citation

Walpole, Horace, et al. Horace Walpole's Correspondence with William Mason. Oxford University Press [u.a.], 1955.