Laird, D. (2003). Approaches to Training and Development (3rd.). Basic Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLaird, Dugan. Approaches to Training and Development. 3rd. New York: Basic Books, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLaird, Dugan. Approaches to Training and Development. 3rd. Basic Books, 2003.
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