Groebner, D. F. (1989). Business statistics: A decision-making approach (3rd ed.). Merrill Pub.
Cita Chicago (17th ed.)Groebner, David F. Business Statistics: A Decision-making Approach. 3rd ed. Columbus, Ohio: Merrill Pub, 1989.
Cita MLA (9th ed.)Groebner, David F. Business Statistics: A Decision-making Approach. 3rd ed. Merrill Pub, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.