(1940). Regulation and operation of emergency vehicles. Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Regulation and Operation of Emergency Vehicles. Eugene: Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1940.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)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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