Παραπομπή APA
Lewis, P. J. (1994). Information-systems development: Systems thinking in the field of information-systems. London: Pitman Pub..
Παραπομπή Chicago StyleLewis, Paul J. Information-systems Development: Systems Thinking in the Field of Information-systems. London: Pitman Pub., 1994.
Παραπομπή MLALewis, Paul J. Information-systems Development: Systems Thinking in the Field of Information-systems. London: Pitman Pub., 1994.
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