APA (7th ed.) Citation

Firth, C. H., & Davies, G. (1940). The regimental history of Cromwell's army. At the Clarendon Press.

Chicago Style (17th ed.) Citation

Firth, C. H., and Godfrey Davies. The Regimental History of Cromwell's Army. Oxford: At the Clarendon Press, 1940.

MLA (9th ed.) Citation

Firth, C. H., and Godfrey Davies. The Regimental History of Cromwell's Army. At the Clarendon Press, 1940.