Dancey, C. P., & Reidy, J. (1999). Statistics without maths: Using SPSS for windows. Prentice Hall.
Dyfyniad Arddull ChicagoDancey, Christine P., and John Reidy. Statistics Without Maths: Using SPSS for Windows. London: Prentice Hall, 1999.
Dyfyniad MLADancey, Christine P., and John Reidy. Statistics Without Maths: Using SPSS for Windows. Prentice Hall, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.