edited by Monica Lanyado and Ann Horne
Routledge, 2006
Buku Teks
edited by H. Thompson Prout, Douglas T. Brown
John Wiley & Sons, 2007
Buku Teks
Lewis, Dana K.
Sage publications, 1981
Buku Teks
edited by Robert T. Ammerman and Michel Hersen
John Wiley & Sons, 1997
Buku Teks
Schaefer, Charles E, author
The Guilford Press, 2016
Buku Teks