Keller, G. (2009). Statistics for management. Cengage learning.
Čikaški stil citiranjaKeller, Gerald. Statistics for Management. Australia: Cengage learning, 2009.
MLA način citiranjaKeller, Gerald. Statistics for Management. Cengage learning, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.