Krouwel, B. (1999). Outdoor training: A sourcebook of activities for management trainers. Viva.
芝加哥风格引文Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. New delhi: Viva, 1999.
MLA引文Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. Viva, 1999.
警告：这些引文格式不一定是100％准确.