Leatherman, D. (1990). The training trilogy: Facilitation skills. Human Resource Development Press, Inc.
Chicago-viite (17. p.)Leatherman, Dick. The Training Trilogy: Facilitation Skills. Amherst, Massachussetts: Human Resource Development Press, Inc, 1990.
MLA-viite (9. p.)Leatherman, Dick. The Training Trilogy: Facilitation Skills. Human Resource Development Press, Inc, 1990.
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