SpringerLink (Online service), Andreasen, T., Yager, R. R., Bulskov, H., Christiansen, H., & Larsen, H. L. (2009). Flexible Query Answering Systems: 8th International Conference, FQAS 2009, Roskilde, Denmark, October 26-28, 2009. Proceedings. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Troels Andreasen, Ronald R. Yager, Henrik Bulskov, Henning Christiansen, και Henrik Legind Larsen. Flexible Query Answering Systems: 8th International Conference, FQAS 2009, Roskilde, Denmark, October 26-28, 2009. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Flexible Query Answering Systems: 8th International Conference, FQAS 2009, Roskilde, Denmark, October 26-28, 2009. Proceedings. Springer Berlin Heidelberg, 2009.
