Coba jelasin Artikel dari Sidney Hook dong

"Karl Marx and Moses Hess," 1934

"Marx's Criticism of 'True Socialism,'" 1935

"Heresy, Yes—But Conspiracy, No," The New York Times, 1950

Robert B. Talisse and Robert Tempio, eds., Sidney Hook on Pragmatism, Freedom, and Democracy: The Essential Essays, Amherst, New York: Prometheus Books, 2002.