Παραπομπή σε μορφή APA (7η εκδ.)

Empson, W. (1961). Seven types of ambiguity ([3rd ed.].). Penguin Books in association with Chatto and Windus.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Empson, William. Seven Types of Ambiguity. [3rd ed.]. Harmondsworth, Middlesex: Penguin Books in association with Chatto and Windus, 1961.

Παραπομπή σε μορφή MLA (9th εκδ.)

Empson, William. Seven Types of Ambiguity. [3rd ed.]. Penguin Books in association with Chatto and Windus, 1961.