Libes, Susan M.
John Wiley & Sons, 1992
Buku Teks
Williams, Joreme
Little, Brown And Company, 1962
Buku Teks
Davis, Richard A.
Wm.C. Brown Publishers, 1996
Buku Teks
Weyl, Peter K.
John Wiley & Sons, 1970
Buku Teks
ed. by Michael J. Kennish
CRC Press, 1994
Buku Referensi