Gaya APA

Bowerman, B, L., O'Connell, R, T. (2007). Business Statistics in Practice FOURTH EDITION (4th ed). New York: McGraw-Hill Irwin.

Gaya MLA

Bowerman, Bruce, L.., O'Connell, Richard, T.. "Business Statistics in Practice FOURTH EDITION". 4th ed New York: McGraw-Hill Irwin, 2007. Text.