SpringerLink (Online service), Pires, F. M., & Abreu, S. (2003). Progress in Artificial Intelligence: 11th Portuguese Conference on Artificial Intelligence, EPIA 2003, Beja, Portugal, December 4-7, 2003. Proceedings. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Fernando Moura Pires, και Salvador Abreu. Progress in Artificial Intelligence: 11th Portuguese Conference on Artificial Intelligence, EPIA 2003, Beja, Portugal, December 4-7, 2003. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Progress in Artificial Intelligence: 11th Portuguese Conference on Artificial Intelligence, EPIA 2003, Beja, Portugal, December 4-7, 2003. Proceedings. Springer Berlin Heidelberg, 2003.
