Smith, Edward E., 1940-
Wadsworth/Thomson Learning, 2003
Buku Teks
Atkinson, Rita L.
Harcourt Brace College, 1996
Buku Teks
Springer-Verlag, 2012
eBooks
Smith, Edward E., 1940-
[Publisher not identified], 2003
Buku Teks
Kalat, James W.
Wadsorth , 2001
Buku Teks