1. Butler, J. (1990). Gender trouble: Feminism and the subversion of identity. London: Routledge.
2. Diamant, L., & Lee, J. A. (2002). The psychology of sex, gender, and jobs. Westport, CT: Praeger.
3. Howard, J. A., & Hollander, J. (1997). The gender lens: Gendered situations, gendered selves. Thousand Oaks, CA: Sage.
4. Mackie, M. (1987). Constructing women and men: Gender socialization. New York: Holt, Rinehart & Winston.
5. Merriam-Webster Dictionary Online: www.m-w.com