1. Patterns of attachment: A psychological study of the strange situation;Ainsworth,1978
2. Attachment and loss: Vol. 1. Attachment;Bowlby,1969
3. Attachment and loss: Vol. 2. Separation—Anxiety and anger;Bowlby,1973
4. The making and breaking of affectional bonds. Aetiology and psychopathology in light of attachment theory;Bowlby,1977
5. The making and breaking of affectional bonds;Bowlby,1979