Jackson, S. L. (2003). Research methods and statistics: A critical thinking approach. Thomson/Wadsworth.
Cita Chicago (17th ed.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. Australia: Thomson/Wadsworth, 2003.
Cita MLA (9th ed.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. Thomson/Wadsworth, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.