Παραπομπή σε μορφή APA (7η εκδ.)

O'Brien, J. (1870). Note, To: "Gallagher" From: "JC," March 29, 1870.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Brien, J.C. Note, To: "Gallagher" From: "JC," March 29, 1870. 1870.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Brien, J.C. Note, To: "Gallagher" From: "JC," March 29, 1870. 1870.