1. Amos users’ guide version 3.6;Arbuckle,1997
2. Ballard, B. (1996). Contexts of judgement: an analysis of some assumptions identified in examiners’ reports on 62 successful PhD theses. Paper presented to the Conference on Quality in Postgraduate Research, Adelaide.
3. Cross-validation of covariance structures;Cudeck;Multivariate Behavioral Research,1983
4. Multilevel statistical models;Goldstein,1995
5. Multivariate data analysis with readings;Hair,1995