Παραπομπή σε μορφή APA (7η εκδ.)

O'Reilly, R. M. (1876). Letter, To: "My dear Tom" From: "Your affectionate brother, Robert," December 29, 1876.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Reilly, Robert M. Letter, To: "My Dear Tom" From: "Your Affectionate Brother, Robert," December 29, 1876. 1876.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Reilly, Robert M. Letter, To: "My Dear Tom" From: "Your Affectionate Brother, Robert," December 29, 1876. 1876.