O'Brien, M. J. (1883). Postcard, To: "Editor, I.C.B.U. Journal" From: M. J. O'Brien, July 10, 1883.
Chicago Style (17th ed.) CitationO'Brien, M. J. Postcard, To: "Editor, I.C.B.U. Journal" From: M. J. O'Brien, July 10, 1883. 1883.
MLA (8th ed.) CitationO'Brien, M. J. Postcard, To: "Editor, I.C.B.U. Journal" From: M. J. O'Brien, July 10, 1883. 1883.
Warning: These citations may not always be 100% accurate.