SpringerLink (Online service) & Thanos, C. (1997). Research and Advanced Technology for Digital Libraries: First European Conference, ECDL '97 Pisa, Italy, September 1-3, 1997 Proceedings (1st ed. 1997.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/BFb0026716
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Costantino Thanos. Research and Advanced Technology for Digital Libraries: First European Conference, ECDL '97 Pisa, Italy, September 1-3, 1997 Proceedings. 1st ed. 1997. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/BFb0026716.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Costantino Thanos. Research and Advanced Technology for Digital Libraries: First European Conference, ECDL '97 Pisa, Italy, September 1-3, 1997 Proceedings. 1st ed. 1997. Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/BFb0026716.
