Guenther, Herbert V.
Treasures on the Tibetan Middle way
Shambhala, 1976
 Buku Teks
Way, Lawrence W.
Current surgical diagnosis and treatment / Lawrence W. WAY.
California Lange Medical Publ., 1983
 Buku Teks
Russ, Sandra W
Play in Child Development and Psychotherapy / Sandra W Russ
Lawrence Erlbaum Assossiate, 2004
 Buku Teks
Maier, Henry W
Three theories of child development / Henry W. Maier
Harper and Row, 1978
 Buku Teks
Connell, R.W.
The child's construction of politics / by R. W. Connell
Melbourne University Press, 1971
 Buku Teks