Trích dẫn APA

(2001). The state of the environment in Denmark: NERI technical report No.409. Denmark: National Environmental research Institute.

Trích dẫn kiểu Chicago

The State of the Environment in Denmark: NERI Technical Report No.409. Denmark: National Environmental research Institute, 2001.

Trích dẫn MLA

The State of the Environment in Denmark: NERI Technical Report No.409. Denmark: National Environmental research Institute, 2001.

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