1. Ammaniti M., Nicolais G., Speranza A.M. (2007). Attachment and sexuality during adolescence: interaction, integration or interference. In: Diamond D., Blatt S.J., Lichtenberg J.D., eds., Attachment and Sexuality. New York: The Analytic Press, pp. 79-105
2. The development of adult responses from responses given during imprinting by the domestic chick
3. Boccadoro L. (1996). Manuale del Sesamo. Firenze: Organizzazioni Speciali.
4. Bowlby J. (1969). Attachment and loss Vol. 1: Attachment. New York: Basic
5. Books, (trad. it. Attaccamento e perdita. L’attaccamento alla madre Vol.1. Torino: Bollati Boringhieri, 1999).