(1940). Regulation and operation of emergency vehicles. Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities.
Čikaški stil citiranja (17. izdanje)Regulation and Operation of Emergency Vehicles. Eugene: Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1940.
MLA način citiranja (8. izdanje)Regulation and Operation of Emergency Vehicles. Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1940.
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