1. Patterns of Attachment: A Psychological Study of the Strange Situation;Ainsworth,1978
2. Mother-infant attachment;Ainsworth;Am. Psychol.,1979
3. Attachments beyond infancy;Ainsworth;Am. Psychol.,1989
4. The inventory of parent and peer attachment: Relationships to well-being in adolescence;Armsden;J. Youth. Adolesc.,1987
5. Armsden, G. C., Greenberg, M. T., 2009. Inventory of Parent and Peer Attachment (IPPA). Revised Edition. Available at: http://prevention.psu.edu/pubs/documents/IPPAmanual0809.pdf.