O'Reilly, R. M. (1867). Envelope, To: John O'Reilly Esq, Philadelphia, Penna., May 5, [1867].
Chicagoスタイル(17版)引用形式O'Reilly, Robert M. Envelope, To: John O'Reilly Esq, Philadelphia, Penna., May 5, [1867]. 1867.
MLA(8版)引用形式O'Reilly, Robert M. Envelope, To: John O'Reilly Esq, Philadelphia, Penna., May 5, [1867]. 1867.
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