Eagleton, Terry Why Marx Was Right Yale University Press, 2011, pp. 158 Seigel, Jerrold Marx's Fate Princeton University Press, 1978, pp. 112–19 Mark Neocleous.
2011년 3월 7일에 확인함.  Eagleton, Terry Why Marx Was Right Yale University Press, 2011, pp. 158 Seigel, Jerrold Marx's Fate Princeton University Press, 1978, pp. 112–19 Mark Neocleous.