Cohen, David
The development of play
Routledge, 2006
 Buku Teks SO
Scandett, W. George
Childen's play
Sage publications, 2005
 Buku Teks
Children's play
by W. George Scarlett, Sophie Naudeau Dorothy Salonius-Pasternak and Iris Ponte
Sage, 2005
 Buku Teks
Jeffree, Dorothy Moud, 1913-
Let me play
Souvenir Press, 1994
 Buku Teks SO
Cattanach, Ann
Play therapy with abused children
Jessica Kingsley, 1992
 Buku Teks SO