APA (7th ed.) Citation

Boulding, K. E. (1962). Conflict and defense: A general theory. Harper.

Chicago Style (17th ed.) Citation

Boulding, Kenneth E. Conflict and Defense: A General Theory. New York: Harper, 1962.

MLA (9th ed.) Citation

Boulding, Kenneth E. Conflict and Defense: A General Theory. Harper, 1962.