Hill, Charles W. L., author
Houghton Miffiln, 1992
Buku Teks
Hill, Charles W. L., author
Houghton Miffiln, 2001
Buku Teks
Hill, Charles W. L., author
Houghton Miffiln, 1998
Buku Teks
Hill, Charles W. L., author
Houghton Mifflin , 1989
Buku Teks
Pitts, Robert A., author
South-Western College Publishing, 2000
Buku Teks