Rooduijn, M. Closing the gap?: A comparison of voters for radical right-wing populist parties and mainstream parties over time. Radical right-wing populist parties in Western Europe : into the mainstream?.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rooduijn, Matthijs. "Closing the Gap?: A Comparison of Voters for Radical Right-wing Populist Parties and Mainstream Parties over Time." Radical Right-wing Populist Parties in Western Europe : Into the Mainstream? .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rooduijn, Matthijs. "Closing the Gap?: A Comparison of Voters for Radical Right-wing Populist Parties and Mainstream Parties over Time." Radical Right-wing Populist Parties in Western Europe : Into the Mainstream?, .
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.