1. Abidin, R. R. (1995). Parenting Stress Index (3rd ed.).Charlottesville, VA: Pediatric Psychology Press.
2. Adams, M. J., Treiman, R. & Presley, M. (1998).Reading, writing and literacy. In I. E. Sigel & K. A. Renninger (Eds.), Handbook of child psychology: Vol. 4. Child psychology in practice (pp. 275-356). New York: Wiley.
3. Comparison of a Randomized and Two Quasi-Experimental Designs in a Single Outcome Evaluation
4. Alexander, K. L. & Entwisle, D. R. (1998). Achievement in the first two years of school: Patterns and processes.Monographs of the Society for Child Development, 53.