APA (7th ed.) Citation

Ó Murchadha, D. (1961). The Battle of Callan, A. D. 1261.

Chicago Style (17th ed.) Citation

Ó Murchadha, Diarmuid. The Battle of Callan, A. D. 1261. 1961.

MLA (9th ed.) Citation

Ó Murchadha, Diarmuid. The Battle of Callan, A. D. 1261. 1961.

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