Lua APA (7ú heag.)
Leigh, D. (2006). The group trainers handbook: Designing and delivering training for groups (3rd ed.). Kogan Page.
Lua i Stíl Chicago (17ú heag.)
Leigh, David. The Group Trainers Handbook: Designing and Delivering Training for Groups. 3rd ed. London ; Philadelphia: Kogan Page, 2006.
Lua MLA (9ú heag.)
Leigh, David. The Group Trainers Handbook: Designing and Delivering Training for Groups. 3rd ed. Kogan Page, 2006.
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