1. Achievement in the first two years of school: Patterns and processes;Alexander;Monographs of the Society for Research in Child Development,1988
2. Developmentally appropriate practice in early childhood programs serving children from birth through age eight;Bredekamp,1987
3. Cooperative Preschool Inventory—Revised;Caldwell,1974
4. The birthdate effect;DiPasquale;Journal of Learning Disabilities,1980
5. Influence of teacher behavior in the preschool;Fagot;Developmental Psychology,1973