APA (7 वां संस्करण) प्रशस्ति पत्र

Heywood, A. (2016). Key Concepts in Politics and International Relations (2nd.). Palgrave.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Heywood, Andrew. Key Concepts in Politics and International Relations. 2nd. London: Palgrave, 2016.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Heywood, Andrew. Key Concepts in Politics and International Relations. 2nd. Palgrave, 2016.