(1994) An Introduction to Functional Grammar. 2nd edition. London: Arnold.
Lakoff, G. & M. Johnson
(1980) Metaphors We Live By. Chicago: University of Chicago Press.
Reddy, M.
(1979) The Conduit Metaphor. A Case of Frame Conflict in our Language about Language. In A. Ortony (ed.) Metaphor and Thought. Cambridge: Cambridge University Press.
Sperber, D. & D. Wilson
(1986) Relevance: Communication and Cognition. Oxford: Blackwell.