Keller, G. (2009). Managerial statistics abbeviated. Australia: South-Western /Cengage Learning.
Παραπομπή Chicago StyleKeller, Gerald. Managerial Statistics Abbeviated. Australia: South-Western /Cengage Learning, 2009.
Παραπομπή MLAKeller, Gerald. Managerial Statistics Abbeviated. Australia: South-Western /Cengage Learning, 2009.
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