SpringerLink (Online service) & Gent, I. P. (2009). Principles and Practice of Constraint Programming - CP 2009: 15th International Conference, CP 2009 Lisbon, Portugal, September 20-24, 2009 Proceedings. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Ian P. Gent. Principles and Practice of Constraint Programming - CP 2009: 15th International Conference, CP 2009 Lisbon, Portugal, September 20-24, 2009 Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Ian P. Gent. Principles and Practice of Constraint Programming - CP 2009: 15th International Conference, CP 2009 Lisbon, Portugal, September 20-24, 2009 Proceedings. Springer Berlin Heidelberg : Imprint: Springer, 2009.
