Ahern, Charles A., author
Springer, 2011
eBooks
Omrod, Jeanne Ellis, author
Pearson Education, Inc., 2009
Buku Teks
Hilgard, Ernest R. (Ernest Ropiequet), 1904-2001, author
Prentice-Hall, 1975
Buku Teks
Powell, Russell A., 1950-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Hergenhahn, B.R., 1934-, author
[publisher not identified], 1976
Buku Teks