Παραπομπή APA

Blauberg,I V. (1977). Systems theory: Philosophical and methodological problems. Progress Publishers.

Παραπομπή Chicago Style

Blauberg,I V. Systems Theory: Philosophical and Methodological Problems. Moscow: Progress Publishers, 1977.

Παραπομπή MLA

Blauberg,I V. Systems Theory: Philosophical and Methodological Problems. Progress Publishers, 1977.

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