SpringerLink (Online service), Atzeni, P., Chu, W., Lu, H., Zhou, S., & Ling, T. W. (2004). Conceptual Modeling - ER 2004: 23rd International Conference on Conceptual Modeling, Shanghai, China, November 8-12, 2004. Proceedings (1st ed. 2004.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/b101693
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Paolo Atzeni, Wesley Chu, Hongjun Lu, Shuigeng Zhou, και Tok Wang Ling. Conceptual Modeling - ER 2004: 23rd International Conference on Conceptual Modeling, Shanghai, China, November 8-12, 2004. Proceedings. 1st ed. 2004. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b101693.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Conceptual Modeling - ER 2004: 23rd International Conference on Conceptual Modeling, Shanghai, China, November 8-12, 2004. Proceedings. 1st ed. 2004. Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b101693.
