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APA-viitePIARC International Winter Road Congress. (1998). 1998 10th PIARC International Winter Road Congress, 16-19 March in Luleå, Sweden: Technical report. Volume 1, Topic 1A: Winter road maintenance policies: strategy. - Topic 1B: Winter road maintenance policies: organization. Swedish National Road and Transport Research Institute.
Chicago-tyylinen lähdeviittausPIARC International Winter Road Congress. 1998 10th PIARC International Winter Road Congress, 16-19 March in Luleå, Sweden: Technical Report. Volume 1, Topic 1A: Winter Road Maintenance Policies: Strategy. - Topic 1B: Winter Road Maintenance Policies: Organization. Linköping: Swedish National Road and Transport Research Institute, 1998.
MLA-viitePIARC International Winter Road Congress. 1998 10th PIARC International Winter Road Congress, 16-19 March in Luleå, Sweden: Technical Report. Volume 1, Topic 1A: Winter Road Maintenance Policies: Strategy. - Topic 1B: Winter Road Maintenance Policies: Organization. Swedish National Road and Transport Research Institute, 1998.
Harvard-tyylinen lähdeviittausPIARC International Winter Road Congress. 1998. 1998 10th PIARC International Winter Road Congress, 16-19 March in Luleå, Sweden: Technical report. Volume 1, Topic 1A: Winter road maintenance policies: strategy. - Topic 1B: Winter road maintenance policies: organization. Linköping: Swedish National Road and Transport Research Institute.