APA (7e ed.) Bronvermelding

Krouwel, B. (1999). Outdoor training: A sourcebook of activities for management trainers. Viva.

Chicago (17e ed.) Bronvermelding

Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. New delhi: Viva, 1999.

MLA (9e ed.) Bronvermelding

Krouwel, Bill. Outdoor Training: A Sourcebook of Activities for Management Trainers. Viva, 1999.