Krouwel, B. (1999). Outdoor training: A sourcebook of activities for management trainers. Viva.
Chicago-čujuhus (17. p.)Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. New delhi: Viva, 1999.
MLA-čujuhus (9. p.)Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. Viva, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.