Huijbers, J. J. W. (1990). Utilisation of security helmets for two-wheeled vehicle riders. Institute for Road Safety Research SWOV, The Netherlands.
Citazione stile Chigago Style (17a edizione)Huijbers, J. J. W. Utilisation of Security Helmets for Two-wheeled Vehicle Riders. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1990.
Citatione MLA (9a ed.)Huijbers, J. J. W. Utilisation of Security Helmets for Two-wheeled Vehicle Riders. Institute for Road Safety Research SWOV, The Netherlands, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.