Jelaskan Rujukan dari Oliver Cromwell dalam bahasa melayu

Adamson, John (1990). "Oliver Cromwell and the Long Parliament", in Morrill, John (ed.), Oliver Cromwell and the English Revolution Longman,

Ashley, Maurice (1958). The Greatness of Oliver Cromwell Macmillan. online

Clifford, Alan (1999). Oliver Cromwell: the lessons and legacy of the Protectorate Charenton Reformed Publishing, . Religious study.

Davis, J. C. (2001). Oliver Cromwell Hodder Arnold,