- Author: Norberto Bobbio
- Language: Italian
- Year: 1990
- Author: Norberto Bobbio
- Language: Spanish
- Year: 2018
- Author: Norberto Bobbio
- Language: Spanish
- Year: 1985
- Author: Norberto Bobbio
- Language: Portuguese
- Year: 2006
- Author: Norberto Bobbio
- Language: Portuguese
- Year: 2015
- Author: Louis Althusser, Giuseppe Vacca, Lidia Menapace, Lidia Campagnano, Biagio de Giovanni, Francesco Cavazzutti, Marcello Montanari, Nicola Badaloni, Aurelio Campi, Norberto Bobbio, Danilo Zolo, Francesco Fistetti, Pier Aldo Rovatti, Arcangelo Leone de Castris, Carla Pasquinelli, Cesare Luporini, Iring Fetscher, Suzanne de Brunhoff, Elmar Altvater Otto Kallscheuer, Mario Telò, Bernard Edelman, Franz Marek, Giacomo Marramao, Etienne Balibar, Christine Buci-Gluckmann, Rossana Rossanda
- Language: Spanish
- Year: 1983
- Author: Norberto Bobbio
- Language: Italian
- Year: 2009
- Author: Norberto Bobbio
- Language: Portuguese
- Year: 2010
- Author: Norberto Bobbio, David Moore (translator)
- Language: English
- Year: 1948
- Author: Norberto Bobbio
- Language: English
- Year: 1972