Schiller, Bradley R.
Random House of Canada, 1980
Buku Teks
Schiller, Bradley R.
Prentica-Hall , 1975
Buku Teks
Schiller, Bradley R.
Prentice-Hall, 1975
Buku Teks
Schiller, Bradley R.
Irwin Mc Graw-Hill , 1997
Buku Teks
Daugherty, Carroll R.
Houghton Miffiln, 1950
Buku Teks