1. Attachments and other affectional bonds across the life cycle;Ainsworth;Attachment Across the Life Cycle,1991
2. Attachment, exploration, and separation: Illustrated by the behavior of one-year-olds in a strange situation;Ainsworth;Child Development,1970
3. Diagnostic and statistical manual of mental disorders,2013
4. Predictors of treatment outcome and attrition in adults with hoarding disorder;Ayers;Journal of Obsessive-Compulsive and Related Disorders,2018
5. The making and breaking of affectional bonds: 1. Aetiology and psychopathology in the light of attachment theory;Bowlby;British Journal of Psychiatry,1977