1. Patterns of attachment behavior shown by the infant in interaction with his mother;Ainsworth;Merrill-Palmer Quart.,1964
2. Attachment and exploratory behavior of one-year-olds in a strange situation;Ainsworth,1969
3. Attachment and Loss: Volume I. Attachment;Bowlby,1969
4. Vineland Social Maturity Scale;Doll,1965
5. Normality and Pathology in Childhood;Freud,1965