Cita APA (7th ed.)
Erich Grädel, R. K. Computer Science Logic: 23rd International Workshop, CSL 2009, 18th Annual Conference of the EACSL, Coimbra, Portugal, September 7-11, 2009, Proceedings. Springer.
Cita Chicago (17th ed.)
Erich Grädel, Reinhard Kahle. Computer Science Logic: 23rd International Workshop, CSL 2009, 18th Annual Conference of the EACSL, Coimbra, Portugal, September 7-11, 2009, Proceedings. Berlín, Alemania: Springer.
Cita MLA (9th ed.)
Erich Grädel, Reinhard Kahle. Computer Science Logic: 23rd International Workshop, CSL 2009, 18th Annual Conference of the EACSL, Coimbra, Portugal, September 7-11, 2009, Proceedings. Springer.
Atenció: Aquestes cites poden no estar 100% correctes.