Anderson, D. R., Sweeney, D. J., & Williams, T. A. (1993). Statistics for business and economics (5th ed.). West Publishing Co..
Cita Chicago (17th ed.)Anderson, David Ray, Dennis J. Sweeney, i Thomas Arthur Williams. Statistics for Business and Economics. 5th ed. Minneapolis: West Publishing Co., 1993.
Cita MLA (9th ed.)Anderson, David Ray, et al. Statistics for Business and Economics. 5th ed. West Publishing Co., 1993.
Atenció: Aquestes cites poden no estar 100% correctes.