Laird, D. A., & Eleanor C Laird. (1947). Technique of getting things done. McGraw Hill publishisng company.
Παραπομπή Chicago StyleLaird, Donald A., και Eleanor C Laird. Technique of Getting Things Done. Bombay: McGraw Hill publishisng company, 1947.
Παραπομπή MLALaird, Donald A., και Eleanor C Laird. Technique of Getting Things Done. McGraw Hill publishisng company, 1947.
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