6Carey WB, Crocker AC, Elias RE, et al. Developmental-Behavioral Pediatrics. 4th ed. Philadelphia, PA : Saunders/Elsevier,2009 : 1-11.
7Bhasin TK, Brocksen S, Avchen RN, et al. Prevalence of four developmental disabilities among children aged 8 years--Metropolitan Atlanta Developmental Disabilities Surveillance Program, 1996 and 2000. MMWR Surveil Summ ,2006,55 : 1-9.
8Voigt RG, Macias M M, Meyers SM. Developmental and behavioral pediatrics. Elk Grove Village, IL: American Academy of Pediatrics, 2011:5- 21.
9Sroufe LA, Carlson EA, Levy AK, et al. Implications of attachment theory for developmental psychopathology. Dev Psychopathol, 1999 , 11 : 1-13.
10Shaffer DR, Kipp K. Developmental Psychology Childhood and Adolescence, 8th ed. Belmont, CA: Wadsworth Cengage Learning, 2010:62-75.