Kraay, J. H. (1985). Investigation into the effect of the 30 km/hr countermeasure; organisation and approach. Institute for Road Safety Research SWOV, The Netherlands.
Čikaški stil citiranja (17. izdanje)Kraay, J. H. Investigation into the Effect of the 30 Km/hr Countermeasure; Organisation and Approach. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1985.
MLA način citiranja (9. izdanje)Kraay, J. H. Investigation into the Effect of the 30 Km/hr Countermeasure; Organisation and Approach. Institute for Road Safety Research SWOV, The Netherlands, 1985.
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