Παραπομπή APA
Dirickx, Y. M. I., & Jennergren, P. L. (1979). Systems analysis by multilevel methods: With applications to economics and management. Chichester: John Wiley & Sons.
Παραπομπή Chicago StyleDirickx, Yvo M. I., and Peter L. Jennergren. Systems Analysis By Multilevel Methods: With Applications to Economics and Management. Chichester: John Wiley & Sons, 1979.
Παραπομπή MLADirickx, Yvo M. I., and Peter L. Jennergren. Systems Analysis By Multilevel Methods: With Applications to Economics and Management. Chichester: John Wiley & Sons, 1979.
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