SpringerLink (Online service), Ghilardi, S., & Sebastiani, R. (2009). Frontiers of Combining Systems: 7th International Symposium, FroCoS 2009, Trento, Italy, September 16-18, 2009. Proceedings. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Silvio Ghilardi, και Roberto Sebastiani. Frontiers of Combining Systems: 7th International Symposium, FroCoS 2009, Trento, Italy, September 16-18, 2009. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Frontiers of Combining Systems: 7th International Symposium, FroCoS 2009, Trento, Italy, September 16-18, 2009. Proceedings. Springer Berlin Heidelberg : Imprint: Springer, 2009.
