Groebner, D. F., & Shannon, P. W. (1989). Business statistics: A decision-making approach (3rd ed.). Merrill Pub. Co.
Lua i Stíl Chicago (17ú heag.)Groebner, David F., agus Patrick W. Shannon. Business Statistics: A Decision-making Approach. 3rd ed. Columbus: Merrill Pub. Co, 1989.
Lua MLA (9ú heag.)Groebner, David F., agus Patrick W. Shannon. Business Statistics: A Decision-making Approach. 3rd ed. Merrill Pub. Co, 1989.
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