1. Attachment Theory: Retrospect and Prospect
2. Attachment and Loss: Vol. 1. Attachment;Bowlby,1969
3. Attachment and Loss. Vol. 2: Separation: Anxiety and Anger;Bowlby,1973
4. Attachment and Loss. Vol. 3: Loss: Sadness and Depression;Bowlby,1980
5. An Object-Relations Theory of the Personality;Fairbairn,1954