Howell, D. C. (2008). Fundamental statistics for the behavioral sciences (6th ed.). Thomson/Wadsworth.
Cita Chicago (17th ed.)Howell, David C. Fundamental Statistics for the Behavioral Sciences. 6th ed. Belmont, Calif: Thomson/Wadsworth, 2008.
Cita MLA (9th ed.)Howell, David C. Fundamental Statistics for the Behavioral Sciences. 6th ed. Thomson/Wadsworth, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.