APA citiranje

 Helbig, H. (2006).  Knowledge representation and the semantics of natural language.  Springer.

Trích dẫn kiểu Chicago

 Helbig, Hermann.  Knowledge Representation and the Semantics of Natural Language.  Springer, 2006.

MLA citiranje

 Helbig, Hermann.  Knowledge Representation and the Semantics of Natural Language.  Springer, 2006.

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