Hauss, Charles
Wadsworth, 2009
Buku Teks
Hauss, Charles
Wadsworth and Cengage Learning, 2013
Buku Teks
Christian Soe
McGraw-Hill, 2004
Buku Teks
Barringron, Lowell
Wadsworth and Cengage Learning, 2013
Buku Teks
Le Roy, Michael K.
Thomson Wadsworth, 2007
Buku Teks