APA (7 वां संस्करण) प्रशस्ति पत्र

Harmsen, R., & Spiering, M. (2004). Euroscepticism: Party politics, national identity and European integration. Rodopi.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Harmsen, Robert, और M. Spiering. Euroscepticism: Party Politics, National Identity and European Integration. Amsterdam ; New York, NY: Rodopi, 2004.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Harmsen, Robert, और M. Spiering. Euroscepticism: Party Politics, National Identity and European Integration. Rodopi, 2004.