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