APA (7th ed.) Citation

Churchill, W., Barnes, W., & Moffett, H. Y. (1930). The crisis. The Macmillan.

Chicago Style (17th ed.) Citation

Churchill, Winston, Walter Barnes, and Harold Young Moffett. The Crisis. [New York]: The Macmillan, 1930.

MLA (9th ed.) Citation

Churchill, Winston, et al. The Crisis. The Macmillan, 1930.