APA (7th ed.) Citation

Pack, S. W. C. (1961). The Battle of Matapan. Macmillan.

Chicago Style (17th ed.) Citation

Pack, S. W. C. The Battle of Matapan. New York: Macmillan, 1961.

MLA (9th ed.) Citation

Pack, S. W. C. The Battle of Matapan. Macmillan, 1961.