Leigh, D. (2006). The group trainer's handbook: Designing and delivering training for groups (Third edition.). Kogan Page.
Citace podle Chicago (17th ed.)Leigh, David. The Group Trainer's Handbook: Designing and Delivering Training for Groups. Third edition. London ; Philadelphia: Kogan Page, 2006.
Citace podle MLA (8th ed.)Leigh, David. The Group Trainer's Handbook: Designing and Delivering Training for Groups. Third edition. Kogan Page, 2006.
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