Listen, Marxist!
Murray Bookchin & Bea Bookchin
Hegel: A Very Short Introduction
Peter Singer
Sylvan, Fox and Deep Ecology: A View from the Continental Shelf
Robin Attfield
Capital: A Critique of Political Economy, Vol. 3 (Penguin)
Karl Marx & Friedrich Engels
Governing the Commons: The Evolution os Institutions for Collective ...
Elinor Ostrom