Silberman, M. (1999). The 1999 training and performance sourcebook. New York : McGraw-Hill.
Dyfyniad Arddull ChicagoSilberman, Mel. The 1999 Training and Performance Sourcebook. New York : McGraw-Hill, 1999.
Dyfyniad MLASilberman, Mel. The 1999 Training and Performance Sourcebook. New York : McGraw-Hill, 1999.
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