Garry, Ralph
Prentice-Hall, 1969
Buku Teks
Ahern, Charles A., author
Springer, 2011
eBooks
Schwartz, Barry, author
W.W. Norton, 1991
Buku Teks
Omrod, Jeanne Ellis, author
Pearson Education, Inc., 2009
Buku Teks
Hilgard, Ernest R. (Ernest Ropiequet), 1904-2001, author
Prentice-Hall, 1975
Buku Teks