Sobol, M. G. (1993). Introduction to statistics for executives. McGraw-Hill.
Cita Chicago (17th ed.)Sobol, Marion G. Introduction to Statistics for Executives. New York: McGraw-Hill, 1993.
Cita MLA (9th ed.)Sobol, Marion G. Introduction to Statistics for Executives. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.