Thurman, Harold U.
Merril Publishing company , 1988
Buku Teks
Pinet, Paul R.
Jones and Bartlett Publishers, 1998
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