APA (7th ed.) Citation

Cromwell, O., & Johnston, C. L. (1834). Original letters of Oliver Cromwell. Printed by Patrick Kelly.

Chicago Style (17th ed.) Citation

Cromwell, Oliver, and C. L. Johnston. Original Letters of Oliver Cromwell. Drogheda: Printed by Patrick Kelly, 1834.

MLA (9th ed.) Citation

Cromwell, Oliver, and C. L. Johnston. Original Letters of Oliver Cromwell. Printed by Patrick Kelly, 1834.

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