APA aipamena

Morrill, J. A. (2007). Oliver Cromwell.

Chicago Style aipamena

Morrill, John; Author. Oliver Cromwell. New York, Oxford University Press, 2007.

MLA aipamena

Morrill, John; Author. Oliver Cromwell. 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.