Solomon, Sally
McGraw-Hill, 1987
Buku Teks
Timberlake, Karen C., author
Prentice-Hall, 2007
Buku Teks
Timberlake, Karen C., author
Pearson - Prentice Hall, 2009
Buku Teks
Hill, John W., author
Prentice-Hall, 1993
Buku Teks
Caret, Robert L., author
Wm. C. Brown, 1993
Buku Teks