Goodlad, G. (2007). Oliver Cromwell. Humanities-Ebooks.
Cita Chicago (17th ed.)Goodlad, Graham. Oliver Cromwell. Tirril [England]: Humanities-Ebooks, 2007.
Cita MLA (9th ed.)Goodlad, Graham. Oliver Cromwell. Humanities-Ebooks, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.