Charles Dickens (1867). “Charles Dickens's works. Charles Dickens ed. [18 vols. of a 21 vol. set. Wanting A child's history of England; Christmas stories; The mystery of Edwin Drood].”, p.154
Jean-Jacques Rousseau, Gustave Le Bon, Charles Mackay, Wilfred Trotter, Everett Dean Martin (2017). “WHAT IS MOB MENTALITY? - 8 Essential Books on Crowd Psychology: Psychology of Revolution, Extraordinary Popular Delusions and the Madness of Crowds, Instincts of the Herd, The Social Contract, A Moving-Picture of Democracy...”, p.178, e-artnow