Não informado. (1991). Training and Development. American Society for Training and Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Training and Development. Alexandria, Va: American Society for Training and Development, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Training and Development. American Society for Training and Development, 1991.
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