Gaya APA

Bowerman, B, L., O'connell, R, T. (2007). Business statistics in practice (4th ed.). New York: McGraw-Hill Irwin.

Gaya MLA

Bowerman, Bruce, L.., O'connell, Richard, T.. "Business statistics in practice". 4th ed. New York: McGraw-Hill Irwin, 2007. Text.