SpringerLink (Online service), Jeusfeld, M., Delcambre, L., & Ling, T. (2011). Conceptual Modeling – ER 2011: 30th International Conference, ER 2011, Brussels, Belgium, October 31 - November 3, 2011. Proceedings. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Manfred Jeusfeld, Lois Delcambre, και Tok-Wang Ling. Conceptual Modeling – ER 2011: 30th International Conference, ER 2011, Brussels, Belgium, October 31 - November 3, 2011. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2011.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Conceptual Modeling – ER 2011: 30th International Conference, ER 2011, Brussels, Belgium, October 31 - November 3, 2011. Proceedings. Springer Berlin Heidelberg : Imprint: Springer, 2011.
