Παραπομπή APA

Weidner, H. (1986). Air pollution control strategies and policies in the Federal Republic of Germany: : laws, regulations, implementation and principal shortcomings. Berlin: Editions Sigma.

Παραπομπή Chicago Style

Weidner, Helmut. Air Pollution Control Strategies and Policies in the Federal Republic of Germany: : Laws, Regulations, Implementation and Principal Shortcomings. Berlin: Editions Sigma, 1986.

Παραπομπή MLA

Weidner, Helmut. Air Pollution Control Strategies and Policies in the Federal Republic of Germany: : Laws, Regulations, Implementation and Principal Shortcomings. Berlin: Editions Sigma, 1986.

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