* Erik Oddvar Eriksen and Jarle Weigard، Understanding Habermas: Communicative Action and Deliberative Democracy، Continuum International Publishing، 2004 (ISBN 0-8264-7179-X).
* Erik Oddvar Eriksen and Jarle Weigard, "Understanding Habermas: Communicative Action and Deliberative Democracy", Continuum International Publishing, 2004 (ISBN 082647179X).