Cita APA (7a ed.)

Cromwell, O., & Carlyle, T. (1846). Oliver Cromwell's letters and speeches (2nd ed., enl.). Chapman and Hall.

Cita Chicago Style (17a ed.)

Cromwell, Oliver, y Thomas Carlyle. Oliver Cromwell's Letters and Speeches. 2nd ed., enl. London: Chapman and Hall, 1846.

Cita MLA (9a ed.)

Cromwell, Oliver, y Thomas Carlyle. Oliver Cromwell's Letters and Speeches. 2nd ed., enl. Chapman and Hall, 1846.