SpringerLink (Online service), Laender, A. H. F., Castano, S., Dayal, U., Casati, F., & Oliveira, J. P. M. d. (2009). Conceptual Modeling - ER 2009: 28th International Conference on Conceptual Modeling, Gramado, Brazil, November 9-12, 2009. Proceedings. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Alberto H. F. Laender, Silvana Castano, Umeshwar Dayal, Fabio Casati, και José Palazzo M. de Oliveira. Conceptual Modeling - ER 2009: 28th International Conference on Conceptual Modeling, Gramado, Brazil, November 9-12, 2009. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Conceptual Modeling - ER 2009: 28th International Conference on Conceptual Modeling, Gramado, Brazil, November 9-12, 2009. Proceedings. Springer Berlin Heidelberg, 2009.
