Derry, Jan
Wiley-Blackwell, 2013
Buku Teks
Gredler, Margaret E.
The Guilford Press, 2008
Buku Teks
edited by Harry Daniels
Routledge, 2005
Buku Teks
Kozulin, Alex
Harvester Wheatsheaf, 1990
Buku Teks
Yudrik Jahja
Kencana Prenada Media, 2011
Buku Teks