Roberts, S., & Butts, R. F. The individual and the nature of mass events.
Cita Chicago (17th ed.)Roberts, Seth, i Robert F. Butts. The Individual and the Nature of Mass Events.
Cita MLA (8th ed.)Roberts, Seth, i Robert F. Butts. The Individual and the Nature of Mass Events.
Atenció: Aquestes cites poden no estar 100% correctes.