1. Baloti, X. (1996). Initial and Continuing Vocational Training in Greece, National Report for the programme Leonardo da Vinci, EIE Studies, 3, 1-115.(in Greek).
2. Berelson, B. (1971). Content Analysis in Communication Research. New York: Hafner Publishing.
3. Bowen, W.G. & Fine-gan, T.A. (1969). The Economics of Labor Force Participation. NJ: Princeton.
4. Cohen, L., & Manion, L. (1994). Research methods in education (4th ed.). London: Routledge.
5. Doulkeri, T. (1994). Ggender equality in labor relations. Athens: Papazisis (in Greek). ELSTAT - National Statistical Service of Greece. http://www.statistics.gr.(accessed 6/8/2009).