SpringerLink (Online service), Cotta, C., & Cowling, P. (2009). Evolutionary Computation in Combinatorial Optimization: 9th European Conference, EvoCOP 2009, Tübingen, Germany, April 15-17, 2009. Proceedings. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Carlos Cotta, και Peter Cowling. Evolutionary Computation in Combinatorial Optimization: 9th European Conference, EvoCOP 2009, Tübingen, Germany, April 15-17, 2009. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Evolutionary Computation in Combinatorial Optimization: 9th European Conference, EvoCOP 2009, Tübingen, Germany, April 15-17, 2009. Proceedings. Springer Berlin Heidelberg : Imprint: Springer, 2009.