APA (7th ed.) Citation

Chester, L., Young, H., & Fay, S. (1967). The Zinoviev letter. Heinemann.

Chicago Style (17th ed.) Citation

Chester, Lewis, Hugo Young, and Stephen Fay. The Zinoviev Letter. London: Heinemann, 1967.

MLA (8th ed.) Citation

Chester, Lewis, et al. The Zinoviev Letter. Heinemann, 1967.