Warr, P. a., & Heil Rackhman. (1971). Evaluation of management training: A practical framework, with cases,for evaluation training needs and results. Britain Gower press limited.

Warr, Peter...[et al.], and Heil Rackhman. Evaluation of Management Training: A Practical Framework, with Cases,for Evaluation Training Needs and Results. London: Britain Gower press limited, 1971.

Warr, Peter...[et al.], and Heil Rackhman. Evaluation of Management Training: A Practical Framework, with Cases,for Evaluation Training Needs and Results. Britain Gower press limited, 1971.