Παραπομπή σε μορφή APA (7η εκδ.)

O'Reilly, R. M. (1877). Letter, To: "Dear Tom" From: "Your affectionate brother, Robert," June 4, 1877.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Reilly, Robert M. Letter, To: "Dear Tom" From: "Your Affectionate Brother, Robert," June 4, 1877. 1877.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Reilly, Robert M. Letter, To: "Dear Tom" From: "Your Affectionate Brother, Robert," June 4, 1877. 1877.