SpringerLink (Online service), Lamersdorf, W., & Merz, M. (1998). Trends in Distributed Systems for Electronic Commerce: International IFIP/GI Working Conference, TREC'98, Hamburg, Germany, June 3-5, 1998, Proceedings (1st ed. 1998.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/BFb0053396
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Winfried Lamersdorf, και Michael Merz. Trends in Distributed Systems for Electronic Commerce: International IFIP/GI Working Conference, TREC'98, Hamburg, Germany, June 3-5, 1998, Proceedings. 1st ed. 1998. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1998. https://doi.org/10.1007/BFb0053396.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Trends in Distributed Systems for Electronic Commerce: International IFIP/GI Working Conference, TREC'98, Hamburg, Germany, June 3-5, 1998, Proceedings. 1st ed. 1998. Springer Berlin Heidelberg : Imprint: Springer, 1998. https://doi.org/10.1007/BFb0053396.
