1. Attachment and Loss: Vol. 1. Attachment;Bowlby,1982
2. Attachment and other affectional bonds across the life cycle;Ainsworth,1978
3. Patterns of Attachment: A Psychological Study of the Strange Situation;Ainsworth,1978
4. Attachment and Loss: Vol. 2. Separation, Anxiety and Anger;Bowlby,1973
5. Self-report measurement of adult attachment: an integrative overview;Brennan,1998