APA (7th ed.) Citation

Ellis, P. B. (1980). Caesar's invasion of Britain. New York University Press.

Chicago Style (17th ed.) Citation

Ellis, Peter Berresford. Caesar's Invasion of Britain. New York: New York University Press, 1980.

MLA (9th ed.) Citation

Ellis, Peter Berresford. Caesar's Invasion of Britain. New York University Press, 1980.