1. Categorical Data Analysis;Agresti,1990
2. Practical Statistics for Medical Research;Altman,1991
3. Nonparametric Statistical Inference;Dickinson Gibbons,1992
4. Ergonomic development work;Garmer;Appl. Ergonom.,1995
5. Gibbs, G., 1988. Learning by doing—A Guide to Teaching and Learning methods. Further Education Curriculum Review and Development Unit (FEU), London.