1. Ainsworth, M. D. S. (1978). Patterns of attachment: A psychological study of the strange situation. Lawrence Erlbaum Associates.
2. Bauman, Z. (1998). Globalization: The human consequences.
3. Bowlby, J. (1969). Attachment and loss, 1. Attachment. Basic Books.
4. Durkheim, E. (1897). Suicide: A. The Study of Sociology.
5. Fromm, E. (1941). Escape from freedom.