APA (7th ed.) Citation

Gibbs, P. (1915). The soul of the war. A. L. Burt.

Chicago Style (17th ed.) Citation

Gibbs, Philip. The Soul of the War. New York: A. L. Burt, 1915.

MLA (9th ed.) Citation

Gibbs, Philip. The Soul of the War. A. L. Burt, 1915.