"Dark materials to create more worlds": considering his dark materials as science fiction
Barfield, S. 2011. "Dark materials to create more worlds": considering his dark materials as science fiction. in: Barfield, S. and Cox, K. (ed.) Critical perspectives on Philip Pullman’s His dark materials: essays on the novels, the film and the stage productions Jefferson, North Carolina McFarland & Co. Publishers. pp. 57-75