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Hobolt, Sara B.; Brug, Wouter Van der; Vreese, Claes H. De; Boomgaarden, Hajo G.; Hinrichsen, Malte C. (2011-09-01). "Religious intolerance and Euroscepticism" (in en). European Union Politics12 (3): 359–79. doi:10.1177/1465116511404620. ISSN1465-1165.
Hobolt, Sara B.; Brug, Wouter Van der; Vreese, Claes H. De; Boomgaarden, Hajo G.; Hinrichsen, Malte C. (2011-09-01). "Religious intolerance and Euroscepticism" (in en). European Union Politics12 (3): 359–79. doi:10.1177/1465116511404620. ISSN1465-1165.