Elrington, C. R., & O'Hegarty, P. S. (1847). Appendix to the fourth edition of the Rev. Dr. Elrington's suggestions on national education in Ireland: In answer to the remarks of the Rev. Dr. Miller, Rev. Charles King Irwin, and the Archdeacon of Meath. Hodges and Smith, Grafton-Street. London: Longman, Brown, and Co.

Elrington, Charles Richard, and P. S. O'Hegarty. Appendix to the Fourth Edition of the Rev. Dr. Elrington's Suggestions on National Education in Ireland: In Answer to the Remarks of the Rev. Dr. Miller, Rev. Charles King Irwin, and the Archdeacon of Meath. Hodges and Smith, Grafton-Street. London: Longman, Brown, and Co, 1847.