SpringerLink (Online service) & Thomas, W. (1999). Foundations of Software Science and Computation Structures: Second International Conference, FOSSACS'99, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS'99, Amsterdam, The Netherlands, March 22-28, 1999, Proceedings (1st ed. 1999.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-49019-1
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Wolfgang Thomas. Foundations of Software Science and Computation Structures: Second International Conference, FOSSACS'99, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS'99, Amsterdam, The Netherlands, March 22-28, 1999, Proceedings. 1st ed. 1999. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-49019-1.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Wolfgang Thomas. Foundations of Software Science and Computation Structures: Second International Conference, FOSSACS'99, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS'99, Amsterdam, The Netherlands, March 22-28, 1999, Proceedings. 1st ed. 1999. Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-49019-1.