Dictatorship vs. Democracy (Terrorism and Communism): a reply to Karl Kantsky

The anatomy of revolution

Crane Brinton

The Ruins; Or, Meditation on the Revolutions of Empires and the Law of Nature

C.-F. Volney

Paris and the Social Revolution A Study of the Revolutionary Elements in the Various Classes of Parisian Society

Alvan F. Sanborn

The Psychology of Revolution

Gustave Le Bon

The Theory of Social Revolutions

Brooks Adams

Les Ruines, ou méditation sur les révolutions des empires

C.-F. Volney