Ferguson, George Andrew
Statistical analysis in psychology and education
McGraw-Hill , 1981
 Buku Teks
Ferguson, George Andrew
Statistical analysis in psychology and education
McGraw-Hill, 1987
 Buku Teks
Ferguson, George Andrew
Statistical analysis in psychology and education
McGraw-Hill , 1989
 Buku Teks
Spiegel, Murray R.
Mathematical handbook of formulas and tables
McGraw-Hill, 1999
 Buku Teks
Burington, Richard Stevens
Handbook of mathematical tables and formulas
McGraw-Hill, 1973
 Buku Referensi