APA (7 वां संस्करण) प्रशस्ति पत्र

Empson, W. (1995). Seven types of ambiguity. Penguin Books in association with Chatto and Windus.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Empson, William. Seven Types of Ambiguity. Harmondsworth, Middlesex: Penguin Books in association with Chatto and Windus, 1995.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Empson, William. Seven Types of Ambiguity. Penguin Books in association with Chatto and Windus, 1995.