Coon, Dennis, author
Wadsworth , 2001
Buku Teks
Coon, Dennis, author
MA Cengage Learning, 2016
Buku Teks
Enos, Matthew, author
Wadsworth, 2002
Buku Teks
Smith, Edward E., 1940-, author
[Publisher not identified], 2003
Buku Teks
Nietzel, Michael T., author
Prentice-Hall, 1998
Buku Teks