CRAIG ROBERT L EDT. (1976). TRAINING & DEVELOPMENT HANDBOOK A GUIDE TO HUMAN RESOURCE DEVELOPMENT (2ND.). MCGRAW-HILL.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCRAIG ROBERT L EDT. TRAINING & DEVELOPMENT HANDBOOK A GUIDE TO HUMAN RESOURCE DEVELOPMENT. 2ND. NEW YORK: MCGRAW-HILL, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCRAIG ROBERT L EDT. TRAINING & DEVELOPMENT HANDBOOK A GUIDE TO HUMAN RESOURCE DEVELOPMENT. 2ND. MCGRAW-HILL, 1976.
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