Maurice, S. Charles
McGraw-Hill, 2002
Buku Teks
Salvatore, Dominick, author
McGraw-Hill, 1993
Buku Teks
Farrar, Donald E., author
Prentice-Hall, 1970
Buku Teks
Douglas, Evan J., 1946-, author
Prentice-Hall, 1992
Buku Teks
Dean, Joel
Prentice-Hall, 1951
Buku Teks