If you want a Marxist interpretation of postmodernism and an attempt to crystallize its meaning in a variety of different contexts (especially literary and cultural criticism), I highly recommend Frederic Jameson's Postmodernism, or, the Cultural Logic of Late Capitalism.
If you want a Marxist interpretation of postmodernism and an attempt to crystallize its meaning in a variety of different contexts (especially literary and cultural criticism), I highly recommend Frederic Jameson's Postmodernism, or, the Cultural Logic of Late Capitalism.