Picconi, M. J., Romano, A., & Olson, C. L. (1993). Business Statistics: Elements and Applications. HarperCollins.
Chicago Style (17th ed.) ZitazioaPicconi, Mario J., Albert Romano, eta Charles L. Olson. Business Statistics: Elements and Applications. New York: HarperCollins, 1993.
MLA (9th ed.) ZitazioaPicconi, Mario J., et al. Business Statistics: Elements and Applications. HarperCollins, 1993.