REFERENCES
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- Halliday, M. A. K. (1978), Language as Social Semiotic. The Social Interpretation of Language and Meaning, London: Edward Arnold.
- O'Toole, M. (2011), The Language of Displayed Art, 2nd ed., London: Routledge.
- Petherbridge, D. (2008), ‘Nailing the liminal’, in S. Garner (ed.), Writing on Drawing, Bristol: Intellect, pp. 27–41.