Karl Heinz John & Tiegelkamp, M. (2010). IEC 61131-3: Programming Industrial Automation Systems. Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids (Second Edition.). Springer.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিKarl Heinz John এবং Michael Tiegelkamp. IEC 61131-3: Programming Industrial Automation Systems. Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids. Second Edition. Heildelberg, Germany: Springer, 2010.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিKarl Heinz John এবং Michael Tiegelkamp. IEC 61131-3: Programming Industrial Automation Systems. Concepts and Programming Languages, Requirements for Programming Systems, Decision-Making Aids. Second Edition. Springer, 2010.
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