Coward, Barry. Cromwell. London: Longman, 1991.

Hill, Christopher. God's Englishman: Oliver Cromwell and the English Revolution. New York: Harper & Row, Publishers, 1970.

Hirst, Derek. Authority and Conflict: England, 1603–1658. Cambridge, MA: Harvard University Press, 1986.

Morrill, John. Oliver Cromwell and the English Revolution. London: Longman, 1990.

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