APA (7th ed.) Citation

Butler, J. R. M., Gibbs, N. H., Butler, J. R. M., Gwyer, J. M., Howard, M. 2., & Ehrman, J. (1957). Grand strategy: 2 September 1939 - June 1941. Grand strategy.

Chicago Style (17th ed.) Citation

Butler, James R. M., Norman Henry Gibbs, James R. M. Butler, J. M. Gwyer, Michael 29.11.1922-30.11.2019 Howard, and John Ehrman. "Grand Strategy: 2 September 1939 - June 1941." Grand Strategy 1957.

MLA (8th ed.) Citation

Butler, James R. M., et al. "Grand Strategy: 2 September 1939 - June 1941." Grand Strategy, 1957.