APA (7th ed.) Zitazioa

EMPSON, W. (1973). Seven types of ambiguity. Chatto and Windus.

Chicago Style (17th ed.) Zitazioa

EMPSON, William. Seven Types of Ambiguity. London: Chatto and Windus, 1973.

MLA (9th ed.) Zitazioa

EMPSON, William. Seven Types of Ambiguity. Chatto and Windus, 1973.