Παραπομπή σε μορφή APA (7η εκδ.)

O'Reilly, R. M. (1909). Envelope, To: "Miss O'Reilly, c/o Major M. W. Ireland, [M.C.U.S.A.?]," April 18, 1909.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Reilly, Robert M. Envelope, To: "Miss O'Reilly, C/o Major M. W. Ireland, [M.C.U.S.A.?]," April 18, 1909. 1909.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Reilly, Robert M. Envelope, To: "Miss O'Reilly, C/o Major M. W. Ireland, [M.C.U.S.A.?]," April 18, 1909. 1909.