Παραπομπή σε μορφή APA (7η εκδ.)

Hart, R. P. (1987). The sound of leadership: Presidential communication in the modern age. University of Chicago Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hart, Roderick P. The Sound of Leadership: Presidential Communication in the Modern Age. Chicago: University of Chicago Press, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hart, Roderick P. The Sound of Leadership: Presidential Communication in the Modern Age. University of Chicago Press, 1987.