Northwest Traffic Engineering Conference. (1949). Proceedings. Bureau of Govermental Research and Services.
Čikaški stil citiranja (17. izdanje)Northwest Traffic Engineering Conference. Proceedings. Seattle: Bureau of Govermental Research and Services, 1949.
MLA način citiranja (9. izdanje)Northwest Traffic Engineering Conference. Proceedings. Bureau of Govermental Research and Services, 1949.
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