Cita APA (7th ed.)

Roberts, W. (1989). Leadership secrets of Attila the Hun. Bantam.

Cita Chicago (17th ed.)

Roberts, Wess. Leadership Secrets of Attila the Hun. London: Bantam, 1989.

Cita MLA (8th ed.)

Roberts, Wess. Leadership Secrets of Attila the Hun. Bantam, 1989.