1. Philip C. Ritterbush, “Aesthetics and objectivity in the study of form in the life sciences” in G. S. Rousseau (Ed.), Organic form. The life of an idea (London: Routledge and Kegan Paul, 1972) pp. 25–60. In connection with the present study see also in the same volume, W. K. Wimsatt, “Organic form: some questions about a metaphor”, pp. 61–82.
2. Terry Eagleton, Criticism and ideology. A study in Marxist literary theory, London: Verso, 1976
3. Raymond Williams, Culture and society 1780–1950, London: Chatto and Windus, 1958 (Hammondsworth: Penguin, 1963).
4. David Bloor, “Wittgenstein and Mannheim on the sociology of mathematics”, Studies in the History and Philosophy of Science, 4, pp. 173–191 (1973) and Knowledge and social imagery (London: Routledge and Kegan Paul, 1976)
5. Barry Barnes, Scientific knowledge and sociological theory (London: Routledge and Kegan Paul, 1974) and Interests and the growth of knowledge (London: Routledge and Kegan Paul, 1977).