Burnard, P. (1999). Interpersonal skills training: A sourcebook of activities for trainers. Kogan Page ; Viva Books.
Lua i Stíl Chicago (17ú heag.)Burnard, Philip. Interpersonal Skills Training: A Sourcebook of Activities for Trainers. London : New Delhi: Kogan Page ; Viva Books, 1999.
Lua MLA (8ú heag.)Burnard, Philip. Interpersonal Skills Training: A Sourcebook of Activities for Trainers. Kogan Page ; Viva Books, 1999.
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