Παραπομπή APA

Empson, W. (1977). Seven types of ambiguity (3rd ed.). Chatto and Windus.

Παραπομπή Chicago Style

Empson, William. Seven Types of Ambiguity. 3rd ed. London: Chatto and Windus, 1977.

Παραπομπή MLA

Empson, William. Seven Types of Ambiguity. 3rd ed. Chatto and Windus, 1977.