T. S. Eliot (1986). “The Use of Poetry and the Use of Criticism: Studies in the Relation of Criticism to Poetry in England”, p.149, Harvard University Press
George Orwell, Peter Hobley Davison (2001). “Orwell and politics: Animal farm in the context of essays, reviews and letters selected from the complete works of George Orwell”, Penguin Modern Classics
Martin Heidegger, Simone de Beauvoir, Jean-Paul Sartre (2016). “The Philosophical Library Existentialism Collection: Essays in Metaphysics, The Ethics of Ambiguity, and The Philosophy of Existentialism”, p.134, Open Road Media