Παραπομπή σε μορφή APA (7η εκδ.)

Huijbers, J. J. W. (1990). Utilisation of security helmets for two-wheeled vehicle riders. Institute for Road Safety Research SWOV, The Netherlands.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Huijbers, J. J. W. Utilisation of Security Helmets for Two-wheeled Vehicle Riders. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Huijbers, J. J. W. Utilisation of Security Helmets for Two-wheeled Vehicle Riders. Institute for Road Safety Research SWOV, The Netherlands, 1990.