APA (7th ed.) Citation

Halpin, J. (1978). From Columbus to Cromwell: Ireland, England and Europe from about 1450 to 1660. Gill and Macmillan.

Chicago Style (17th ed.) Citation

Halpin, James. From Columbus to Cromwell: Ireland, England and Europe from About 1450 to 1660. Dublin: Gill and Macmillan, 1978.

MLA (9th ed.) Citation

Halpin, James. From Columbus to Cromwell: Ireland, England and Europe from About 1450 to 1660. Gill and Macmillan, 1978.