Webster, A. L. (1998). Applied statistics for business and economics: An essentials version (3rd ed.). McGraw-Hill.
Cita Chicago (17th ed.)Webster, Allen L. Applied Statistics for Business and Economics: An Essentials Version. 3rd ed. Boston: McGraw-Hill, 1998.
Cita MLA (9th ed.)Webster, Allen L. Applied Statistics for Business and Economics: An Essentials Version. 3rd ed. McGraw-Hill, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.