Kellog, M. s. (1967). Closing the performance gap: Resulta centered employee development. American management Association.
Παραπομπή Chicago StyleKellog, Marion s. Closing the Performance Gap: Resulta Centered Employee Development. America: American management Association, 1967.
Παραπομπή MLAKellog, Marion s. Closing the Performance Gap: Resulta Centered Employee Development. American management Association, 1967.
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