APA (7th ed.) Citation

Gardiner, S. R. (2014). Oliver Cromwell. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gardiner, Samuel Rawson. Oliver Cromwell. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Gardiner, Samuel Rawson. Oliver Cromwell. Project Gutenberg, 2014.

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