APA (7e ed.) Bronvermelding

Roberts, W., & Attila, d. 4. (1985). Leadership secrets of Attila the Hun. Warner Books.

Chicago (17e ed.) Bronvermelding

Roberts, Wess, en d. 453 Attila. Leadership Secrets of Attila the Hun. New York: Warner Books, 1985.

MLA (9e ed.) Bronvermelding

Roberts, Wess, en d. 453 Attila. Leadership Secrets of Attila the Hun. Warner Books, 1985.