1. Abrams, M.H. NATURAL SUPERNATURALISM: TRADITION AND REVOLUTION IN ROMANTIC LITERATURE. Chapter 3: “The Circuitous Journey: Pilgrims and Prodigals;” Chapter 4: “The Circuitous Journey: Through Alienation to Reintegration;” Chapter 5: “The Circuitous Journey: From Blake to D.H. Lawrence.” W.W. Norton and Co., 1971.
2. Achinstein, Peter, “Circularity and Induction,” ANALYSIS, 23 (1963) 123–27.
3. Achinstein, Peter, “The Circularity of a Self-Supporting Inductive Argument,” ANALYSIS, 22 (1962) 138–41.
4. [Achinstein], Black, Max, “Self-Support and Circularity: A Reply to Mr. Achinstein’s ‘The Circularity of a Self-Supporting Inductive Argument,” ANALYSIS, 23 (1962) 43–44.
5. Agassi, J., “Variations on the Liar’s Paradox,” STUDIA LOGICA, 15 (1964) 237–38.