APA (7th ed.) Citation

Cooper, D., Cooper, D., & Cooper, A. (1984). A durable fire: The letters of Duff and Diana Cooper, 1913-1950. F. Watts.

Chicago Style (17th ed.) Citation

Cooper, Duff, Diana Cooper, and Artemis Cooper. A Durable Fire: The Letters of Duff and Diana Cooper, 1913-1950. New York: F. Watts, 1984.

MLA (9th ed.) Citation

Cooper, Duff, et al. A Durable Fire: The Letters of Duff and Diana Cooper, 1913-1950. F. Watts, 1984.