Παραπομπή σε μορφή APA (7η εκδ.)

Martin, W. C. (1858). Letter, To: "Dear Sir" [Patrick Coad] From: William Martin, February 18, 1858.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Martin, William C. Letter, To: "Dear Sir" [Patrick Coad] From: William Martin, February 18, 1858. 1858.

Παραπομπή σε μορφή MLA (8th εκδ.)

Martin, William C. Letter, To: "Dear Sir" [Patrick Coad] From: William Martin, February 18, 1858. 1858.