Harmsen, R., & Spiering, M. Euroscepticism and the evolution of european political debate: Robert Harmsen. Menno Spiering. Euroscepticism : party politics, national identity and European integration.(2004).
Chicago-Zitierstil (17. Ausg.)Harmsen, Robert, und Menno Spiering. "Euroscepticism and the Evolution of European Political Debate: Robert Harmsen. Menno Spiering." Euroscepticism : Party Politics, National Identity and European Integration.(2004) .
MLA-Zitierstil (8. Ausg.)Harmsen, Robert, und Menno Spiering. "Euroscepticism and the Evolution of European Political Debate: Robert Harmsen. Menno Spiering." Euroscepticism : Party Politics, National Identity and European Integration.(2004), .
警告：這些引文格式不一定是100％准確.