APA (7th ed.) Citation

Lydon, J. F. (1973). Ireland in the later Middle Ages. Gill and Macmillan.

Chicago Style (17th ed.) Citation

Lydon, James F. Ireland in the Later Middle Ages. Dublin: Gill and Macmillan, 1973.

MLA (8th ed.) Citation

Lydon, James F. Ireland in the Later Middle Ages. Gill and Macmillan, 1973.