Ott, Lyman
An introduction to statistical methods and data analysis
Duxbury Press, 1993
 Buku Teks
Statistical methods for comparative studies : techniques for bias reduction
Sharon Anderson [and others]
John Wiley & Sons, 1980
 Buku Teks
Snedecor, George W.
Statistical methods
Iowa State University Press, 1989
 Buku Teks
Snedecor, George W.
Statistical methods
The Iowa State University Press, 1980
 Buku Teks
Snedecor, George W.
Statistical methods
The Iowa State University Press, 1950
 Buku Teks