1. Ainsworth, M. D. S. (1978). Pattern of attachment: A psychological study of the strange situation. Hillsdale, NJ: Lawrence Erlbaum.
2. Allen, J. G., Fonagy, P., & Bateman, A. W. (2008). Mentalizing in clinical practice. Washington, DC: American Psychiatric Association Publishing.
3. Bowlby, J. (1988). A secure base: Clinical applications of attachment theory. London, United Kingdom: Routledge.
4. Bowlby, J. (1999). Attachment: Attachment and loss (2nd ed., Vol. 1). New York, NY: Basic Books. (Original work published 1969)
5. Peer Attachment: A Meta-analytic Review of Gender and Age Differences and Associations with Parent Attachment