Fahr, R., Rabus, J. (2018). 'Populism: Definitions, Questions, Problems, and Theories' In G. Pallaver, M. Gehler, & M. Cau (Eds.), Populism, Populists, and the Crisis of Political Parties (1st ed., pp. 64-80)
Fahr, Robert and Rabus, Johannes. "Populism: Definitions, Questions, Problems, and Theories". Populism, Populists, and the Crisis of Political Parties, edited by Günther Pallaver, Michael Gehler and Maurizio Cau, Duncker & Humblot, 2018, pp. 64-80.
Fahr, R and Rabus, J. (2018): 'Populism: Definitions, Questions, Problems, and Theories', in Pallaver, G, Gehler, M, Cau, M (eds.). Populism, Populists, and the Crisis of Political Parties. Duncker & Humblot, pp. 64-80.