1. Aardal Bernt Johannes Bergh and Atle Haugsgjerd. “Politiske stridsspørsmål ideologiske dimensjoner og stemmegivning.” Bergh og B. Aardal (Red.) Velgere og valgkamp. En studie av stortingsvalget (2017): 44–80.
2. Adorno, Theodor, et al. The Authoritarian Personality. London: Verso Books, 2019.
3. Andersen, Jørgen Goul, and Tor Bjørklund. “Radical Right-wing Populism in Scandinavia: From Tax Revolt to Neo-liberalism and Xenophobia.” In The Politics of the Extreme Right: From the Margins to the Mainstream, edited by Paul Hainsworth, 193–224. London: Bloomsbury Publishing Plc, 2000.
4. Too much or too Little Labour Mobility? State of Play and Policy Issues;Barslund Mikkel;Intereconomics,2014
5. Populists in Government? Hungary's “System of National Cooperation;Batory Agnes.;Democratization,2016