1. Agresti, A. (2002). Categorical data analysis: Wiley series in probability and statistics. Hoboken, NJ: Wiley.
2. Ali, R. (2010). Dear colleague letter: Harassment and bullying. Retrieved October 26, 2010, from http://www2.ed.gov/about/offices/list/ocr/docs/dcl-factsheet-201010.pdf .
3. Almeida, J., Johnson, R., Corliss, H., Molnar, B., & Azrael, D. (2009). Emotional distress among LGBT youth: The influence of perceived discrimination based on sexual orientation. Journal of Youth and Adolescence, 38(7), 1001–1014. doi: 10.1007/s10964-009-9397-9 .
4. Andersen, M. L., & Collins, P. H. (2010). Why race, class, and gender still matter. In M. L. Andersen & P. H. Collins (Eds.), Race, class, and gender: An anthology (7th ed., pp. 1–16). Belmont, GA: Thomson/Wadsworth.
5. Asparouhov, T., & Muthén, B. (2008). Multilevel mixture models. In G. R. Hancock & K. M. Samuelsen (Eds.), Advances in latent variable mixture models (pp. 27–51). Charlotte, NC: Information Age.