John, K. H., & Tiegelkamp, M. (2010). IEC 61131-3: Programming Industrial Automation Systems: Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids. Springer-Verlag Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)John, Karl Heinz, και Michael Tiegelkamp. IEC 61131-3: Programming Industrial Automation Systems: Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)John, Karl Heinz, και Michael Tiegelkamp. IEC 61131-3: Programming Industrial Automation Systems: Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids. Springer-Verlag Berlin Heidelberg, 2010.
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