Gaya APA

Harnett, D, L., Soni, A, K. (1991). Statistical methods for business and economics (4th ed). Reading, MA: Addison Wesley.

Gaya MLA

Harnett, Donald, L.., Soni, Ashok, K.. "Statistical methods for business and economics". 4th ed Reading, MA: Addison Wesley, 1991. Text.