edited by Richard M. Lerner, Laurence Steinberg
John Wiley & Sons, 2004
Buku Teks
Wilmshurst, Linda, author
New Jersey, 2005
Buku Teks
Nevid, Jeffrey S.
Pearson Education International, 2008
Buku Teks
Nevid, Jeffrey S., author
Pearson-Prentice Hall, 2006
Buku Teks
Davies, Douglas, 1942-, author
The Guilford Press, 2004
Buku Teks