1. Anastasi, A. (1976). Psychological testing (4th ed.). New York: Macmillan.
2. Bagnato, S. J. (1979). Developmental scales and developmental curricula: Forgoing the linkage for early intervention. Topics in Early Childhood Special Education, 1(2), 1–8.
3. Barnett, D. W. (1983). Nondiscriminatory multi-factored assessment: A sourcebook. New York: Human Sciences Press.
4. Bayley, N. (1969). Bayley Scales of Infant Development. New York: Psychological Corporation.
5. Brazelton, T. (1973). The Neonatal Behavior Assessment Scale. Philadelphia: Lippincott.