SpringerLink (Online service), Nikolaou, C., & Stephanidis, C. (1998). Research and Advanced Technology for Digital Libraries: Second European Conference, ECDL'98, Heraklion, Crete, Greece, September 21-23, 1998, Proceedings (1st ed. 1998.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-49653-X
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Christos Nikolaou, και Constantine Stephanidis. Research and Advanced Technology for Digital Libraries: Second European Conference, ECDL'98, Heraklion, Crete, Greece, September 21-23, 1998, Proceedings. 1st ed. 1998. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1998. https://doi.org/10.1007/3-540-49653-X.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Research and Advanced Technology for Digital Libraries: Second European Conference, ECDL'98, Heraklion, Crete, Greece, September 21-23, 1998, Proceedings. 1st ed. 1998. Springer Berlin Heidelberg : Imprint: Springer, 1998. https://doi.org/10.1007/3-540-49653-X.
