Zapf, H. Ecological transformations of critical theory: Hubert Zapf. Theory Matters : The Place of Theory in Literary and Cultural Studies Today.(2016).

Zapf, Hubert. "Ecological Transformations of Critical Theory: Hubert Zapf." Theory Matters : The Place of Theory in Literary and Cultural Studies Today.(2016) .

Zapf, Hubert. "Ecological Transformations of Critical Theory: Hubert Zapf." Theory Matters : The Place of Theory in Literary and Cultural Studies Today.(2016), .