Παραπομπή σε μορφή APA (7η εκδ.)

Lewis R. W. B. & Lewis, N. (1999). American characters: Selections from the national portrait gallery, accompanied by literary portraits. Yale University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lewis R. W. B. και Nancy Lewis. American Characters: Selections from the National Portrait Gallery, Accompanied by Literary Portraits. New Haven: Yale University Press, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lewis R. W. B. και Nancy Lewis. American Characters: Selections from the National Portrait Gallery, Accompanied by Literary Portraits. Yale University Press, 1999.