Hauss, Charles, author
Wadsworth, 2009
Buku Teks
Hauss, Charles, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Wang, James C.F., author
Prentice-Hall, 1994
Buku Teks
Roskin, Michael G., 1939-, author
Pearson Education, 2015
Buku Teks
Norton, Alan
Cheltenham Edward Elgar , 1997
Buku Teks