SpringerLink (Online service), Freksa, C., Jantzen, M., & Valk, R. (1997). Foundations of Computer Science: Potential-Theory-Cognition (1st ed. 1997.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/BFb0052071
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Christian Freksa, Matthias Jantzen, και Rüdiger Valk. Foundations of Computer Science: Potential-Theory-Cognition. 1st ed. 1997. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/BFb0052071.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Foundations of Computer Science: Potential-Theory-Cognition. 1st ed. 1997. Springer Berlin Heidelberg : Imprint: Springer, 1997. https://doi.org/10.1007/BFb0052071.
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