Snedecor, George W.
Statistical methods
The Iowa State University Press, 1980
 Buku Teks
Snedecor, George W.
Statistical methods
The Iowa State University Press, 1982
 Buku Teks
Snedecor, George W.
Statistical methods
The Iowa State University Press, 1950
 Buku Teks SO
Ott, Lyman
An introduction to statistical methods and data analysis
Duxbury Press, 1993
 Buku Teks
Snedecor, George W.
Statistical methods, applied to experiments in agriculture and biology
The Iowa State University Press, 1964
 Buku Teks