Cita APA (7a ed.)

Gibbs, P. (1915). The soul of the war. W. Heinemann.

Cita Chicago Style (17a ed.)

Gibbs, Philip. The Soul of the War. London: W. Heinemann, 1915.

Cita MLA (8a ed.)

Gibbs, Philip. The Soul of the War. W. Heinemann, 1915.