APA (7th ed.) Citation

Ramsey, R. W. (1935). Richard Cromwell, Protector of England. Longmans.

Chicago Style (17th ed.) Citation

Ramsey, Robert W. Richard Cromwell, Protector of England. London: Longmans, 1935.

MLA (9th ed.) Citation

Ramsey, Robert W. Richard Cromwell, Protector of England. Longmans, 1935.

Warning: These citations may not always be 100% accurate.