Conover, W.J., author
John Wiley & Sons, 1980
Buku Teks
Conover, W.J., author
John Wiley & Sons, 1999
Buku Teks
Randles, Ronald H., author
John Wiley & Sons, 1979
Buku Teks
Siegel, Sidney, author
McGraw-Hill, 1956
Buku Teks
Desu, M.M., author
Chapman & Hall , 2004
Buku Teks