Leatherman, D. (1990). The training trilogy: Designing programs. Human Resource Development Press, Inc.
Čikaški stil citiranja (17. izdanje)Leatherman, Dick. The Training Trilogy: Designing Programs. Amherst, Massaachussetts: Human Resource Development Press, Inc, 1990.
MLA način citiranja (9. izdanje)Leatherman, Dick. The Training Trilogy: Designing Programs. Human Resource Development Press, Inc, 1990.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.