Bailley, Norman T. J., author
Cambridge University Press, 1992
Buku Teks
Zar, Jerrold H.
Prentice-Hall, 1996
Buku Teks
Glover, Thomas, author
McGraw-Hill, 2002
Buku Teks
Lombard, Olive M.
Appleton-Century-Crofts, 1975
Buku Teks
Sokal, Robert R., author
W.H. Freeman, 1981
Buku Teks