Não informado. (1997). Systems research and behavioral science. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Systems Research and Behavioral Science. Chichester, Inglaterra: John Wiley & Sons, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Systems Research and Behavioral Science. John Wiley & Sons, 1997.
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