McDaniel, Carl
South Western Cengage Learning, 2012
Buku Teks
Still, Richard R.
Prentice-Hall, 1966
Buku Teks
Perreault, William D.
McGraw-Hill, 2015
Buku Teks
Hoffman, K. Douglas
Harcourt College Publishers, 2002
Buku Teks
Hoffamn, K. Douglas
Horcourt Colledge Publisher, 2002
Buku Teks