Empson, W. (1995). Seven types of ambiguity. Penguin Books in association with Chatto and Windus.
Chicago-viite (17. p.)Empson, William. Seven Types of Ambiguity. Harmondsworth, Middlesex: Penguin Books in association with Chatto and Windus, 1995.
MLA-viite (8. p.)Empson, William. Seven Types of Ambiguity. Penguin Books in association with Chatto and Windus, 1995.
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