APA
Ashenfelter O., Zimmerman D. J. & Levine P. B. (2003). Statistics and econometrics: Methods and applications. New York: John Wiley.
Chicago
Ashenfelter Orley, Zimmerman David J and Levine Phillip B. 2003. Statistics and econometrics: Methods and applications. New York: John Wiley.
Harvard
Ashenfelter O., Zimmerman D. J. and Levine P. B. (2003). Statistics and econometrics: Methods and applications. New York: John Wiley.
MLA
Ashenfelter Orley, Zimmerman David J and Levine Phillip B. Statistics and econometrics: Methods and applications. New York: John Wiley. 2003.