O'Brien, W. S. (1843). A Letter of William Smith O'Brien, in reply to the letter of the Rev. T. O'Malley. [s.n.].
Chicago Style (17th ed.) CitationO'Brien, William Smith. A Letter of William Smith O'Brien, in Reply to the Letter of the Rev. T. O'Malley. Dublin: [s.n.], 1843.
MLA (9th ed.) CitationO'Brien, William Smith. A Letter of William Smith O'Brien, in Reply to the Letter of the Rev. T. O'Malley. [s.n.], 1843.
Warning: These citations may not always be 100% accurate.