Leon Trotsky. Encyclopedia of Trotskyism. Trotsky.net. José Carlos Mariátegui. Antonio Gramsci. Antonio Gramsci Gramsci's Life and Thought Gramsci's political and social writings occur in two periods, pre-prison (1910-1926) and prison (1929-35).
Gramsci Links Archive. Gramsci society. Marxists Internet Archive. Ralph Miliband. David Harvey. Robert Brenner. Ellen Meiksins Wood. Ernest Mandel.