APA (7th ed.) Citation

Churchill, W., Churchill, C., & Soames, M. (1999). Winston and Clementine: The personal letters of the Churchills. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Churchill, Winston, Clementine Churchill, and Mary Soames. Winston and Clementine: The Personal Letters of the Churchills. Boston: Houghton Mifflin, 1999.

MLA (9th ed.) Citation

Churchill, Winston, et al. Winston and Clementine: The Personal Letters of the Churchills. Houghton Mifflin, 1999.