SpringerLink (Online service), Donatelli, S., & Kleijn, J. (1999). Application and Theory of Petri Nets 1999: 20th International Conference, ICATPN'99, Williamsburg, Virginia, USA, June 21-25, 1999 Proceedings (1st ed. 1999.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-48745-X
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Susanna Donatelli, και Jetty Kleijn. Application and Theory of Petri Nets 1999: 20th International Conference, ICATPN'99, Williamsburg, Virginia, USA, June 21-25, 1999 Proceedings. 1st ed. 1999. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-48745-X.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Application and Theory of Petri Nets 1999: 20th International Conference, ICATPN'99, Williamsburg, Virginia, USA, June 21-25, 1999 Proceedings. 1st ed. 1999. Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-48745-X.
