Miller, Roger LeRoy, author
Thomson West, 2007
Buku Teks
Miller, Roger LeRoy, author
West Publishing , 1997
Buku Teks
Jennings, Marianne Moody, author
South Western Cengage Learning, 2012
Buku Teks
Cheeseman, Henry R., author
Prentice-Hall, 1998
Buku Teks
Tucker, Edwin W.
Irwin, 1992
Buku Teks