Berman, Barry, author
Prentice Hall International, 1998
Buku Teks
Berman, Barry, author
Prentice-Hall, 2010
Buku Teks
Berman, Barry, author
Pearson-Prentice Hall, 2007
Buku Teks
Silverthorn, Dee Unglaub, author
Pearson, Benjamin Cummings, 2010
Buku Teks
Schiffman, Harvey Richard, author
John Wiley & Sons, 1982
Buku Teks