APA
Groebner D. F. W. S. C. F. D. S., .Business Statistics :A Decision -Making Approach. New Jersey:pearson Prentice Hall,2011: .
Chicago
Groebner David F/Patrick W Shannon/Phillip C Fry/Kent D Smith, .Business Statistics :A Decision -Making Approach. New Jersey:pearson Prentice Hall,2011: .
Harvard
Groebner D. F. W. S. C. F. D. S., .Business Statistics :A Decision -Making Approach. New Jersey:pearson Prentice Hall,2011: .
MLA
Groebner David F/Patrick W Shannon/Phillip C Fry/Kent D Smith, .New Jersey:pearson Prentice Hall,2011: . .