Cita APA

Roberts, W., & Roberts, W. (1987). Leadership secrets of Attila the Hun. New York, New York: Warner Books.

Citación estilo Chicago

Roberts, Wess, y Wess Roberts. Leadership Secrets of Attila the Hun. New York, New York: Warner Books, 1987.

Cita MLA

Roberts, Wess, y Wess Roberts. Leadership Secrets of Attila the Hun. New York, New York: Warner Books, 1987.