APA citiranje

COWI Consulting Engineers and Planners AS. (1999). Economic instruments in environmental protection in Denmark. Denmark: Ministry of Environment and Energy.

Trích dẫn kiểu Chicago

COWI Consulting Engineers and Planners AS. Economic Instruments in Environmental Protection in Denmark. Denmark: Ministry of Environment and Energy, 1999.

MLA citiranje

COWI Consulting Engineers and Planners AS. Economic Instruments in Environmental Protection in Denmark. Denmark: Ministry of Environment and Energy, 1999.