APA (7th ed.) Citation

Empson, W. (1947). Seven types of ambiguity. Chatto and Windus.

Chicago Style (17th ed.) Citation

Empson, William. Seven Types of Ambiguity. London: Chatto and Windus, 1947.

MLA (9th ed.) Citation

Empson, William. Seven Types of Ambiguity. Chatto and Windus, 1947.