APA (7th ed.) Citation

Paleologue, G. M., Morrow, I. F. D., & Morrow, M. M. (1927). Cavour. Harper.

Chicago Style (17th ed.) Citation

Paleologue, Georges Maurice, Ian Fitzherbert Despard Morrow, and Muriel M. Morrow. Cavour. New York: Harper, 1927.

MLA (9th ed.) Citation

Paleologue, Georges Maurice, et al. Cavour. Harper, 1927.